1. Report Industry Investment Rating No relevant content provided. 2. Core Views of the Report - Last week, the bond market sentiment was volatile, with interest rates showing a V-shaped oscillation. Credit bonds also had mixed performance, with the over - sold second - tier and perpetual (二永) bonds partially recovering, while ultra - long - term credit bonds continued to perform poorly. The cost - effectiveness of coupon assets has increased [1][4][10]. - 2 - 5 - year bank secondary capital bonds can continue to be considered; a strategy of sinking into 1 - 3 - year weak - quality urban investment bonds is recommended, as the riding income of about 3 - year varieties with a yield of over 2.2% is quite significant. Ultra - long - term credit bonds have improved in coupon cost - effectiveness after continuous adjustment, but only allocation - type institutions are advised to consider them due to the lack of marginal improvement in liquidity [4][25]. 3. Summary According to the Catalog 3.1 Bond Market Performance - **Interest Rate Bonds**: The overall trend of interest rate bonds was oscillatory last week. The active 10 - year Treasury bond fluctuated between 1.76% - 1.81%, with the bearish force slightly stronger and the bond price weakening over the week [1][10]. - **Credit Bonds**: Different - term credit bond varieties showed differentiated performance. The yields of 1Y - 5Y Treasury bonds and AAA, AA + medium - and short - term notes changed to varying degrees from September 15th to September 19th, 2025. Ultra - long - term credit bonds continued to weaken, with the decline of 10Y varieties generally exceeding that of the same - term interest rate bonds [10][11][12]. 3.2 Secondary - tier and Perpetual (二永) Bonds - **Yield Changes**: After over - adjustment the week before last, the yields of 1Y - 5Y of secondary - tier and perpetual bonds decreased, while those of ultra - long - term parts were similar to ultra - long - term credit bonds. The yields of 1 - 5 years, 7 years, and 10 years of AAA - bank secondary capital bonds decreased by 1.19BP, 1.21BP, 2.58BP, 0.53BP, 1.51BP respectively, and increased by 1.63BP and 3.53BP respectively [2][17]. - **Trading Situation**: In the first half of the week, the sentiment for recovery was high, while in the second half, it was more pessimistic. From September 15th to September 19th, the proportion of low - valuation transactions of secondary - tier and perpetual bonds was 100.00%, 100.00%, 100.00%, 0.00%, 2.44% respectively; the average trading durations were 6.16 years, 4.66 years, 5.01 years, 1.07 years, 0.96 years respectively. The discount trading amplitude was generally within 2BP, and there were only 8 transactions with an amplitude of over 3BP [18][20]. 3.3 Ultra - long - term Credit Bonds - **Selling Pressure**: The institutional selling of ultra - long - term credit bonds continued to strengthen throughout the week, but it was not a typical urgent selling situation. From September 15th to September 19th, the proportion of discount transactions was 56.10%, 70.73%, 48.78%, 65.85%, 78.05% respectively, and most of the discount amplitudes were within 4BP [3][21]. - **Buying Willingness**: The market's willingness to buy ultra - long - term credit bonds remained weak, and high - activity transactions were mainly concentrated in weak - quality urban investment bonds. The proportion of transactions below the valuation was 26.83%, 9.76%, 36.59%, 21.95%, 7.32% respectively. However, about 25% of the transactions below the valuation had an amplitude of over 4BP, mainly in 2 - 5 - year weak - quality urban investment bonds [3][22][27]. 3.4 Curve Shape and Yield Quantiles - **Curve Steepness**: The steepness of the 1 - 2 - year and 2 - 3 - year segments of the full - grade yield curve was the highest, and it was steeper than that after the sharp decline at the end of July. Taking AA + medium - term notes and AA urban investment bonds as examples, the slopes of different segments were calculated [13]. - **Yield Quantiles**: From September 15th to September 19th, 2025, the 1Y - 3Y coupon assets had a certain cost - effectiveness, but the credit spread protection was insufficient. The valuation yields to maturity of 1Y - AAA, 3Y - AAA, etc. were at the corresponding quantiles since 2024, and the historical quantiles of credit spreads were also provided [14][16].

Report Industry Investment Rating - No relevant content provided Core Viewpoints - As of September 22, 2025, the valuation yields and spreads of private enterprise industrial bonds and real estate bonds in the outstanding credit bonds are generally higher than those of other varieties. Compared with last week, the yields of most varieties in non - financial and non - real estate industrial bonds have increased, while the adjustment range of real estate bond yields is relatively small. In financial bonds, the yields of medium - term varieties from 1 - 3 years have mostly declined [2][3][8] - In public urban investment bonds, the weighted average valuation yields in Jiangsu and Zhejiang are below 2.7%, and the yields of urban investment bonds in prefecture - level and district - county levels in Guizhou exceed 4.5%. In private urban investment bonds, the weighted average valuation yields in coastal provinces such as Shanghai, Zhejiang, Guangdong, and Fujian are below 3%, and the yields of varieties in prefecture - level cities in Guizhou and Yunnan are higher than 4% [2][14][22] Summary by Directory Chart 1: Outstanding Credit Bond Weighted Average Valuation Yield - Displays the weighted average valuation yields of various types of outstanding credit bonds as of September 22, including urban investment bonds, non - financial non - real estate industrial bonds (state - owned and private enterprises), real estate bonds (state - owned and private enterprises), financial bonds, etc. [10] Chart 2: Outstanding Credit Bond Weighted Average Spread - Presents the weighted average spreads of various types of outstanding credit bonds as of September 22, with the calculation benchmark being the same - term China Development Bank bonds [11] Chart 3: Change in Outstanding Credit Bond Weighted Average Valuation Yield Compared to Last Week - Shows the changes in the weighted average valuation yields of various types of outstanding credit bonds as of September 22 compared to last week, calculated based on the yields of September 22 and September 15 [12] Chart 4: Change in Outstanding Credit Bond Weighted Average Spread Compared to Last Week - Illustrates the changes in the weighted average spreads of various types of outstanding credit bonds as of September 22 compared to last week, calculated based on the spreads of September 22 and September 15 [13] Chart 5: Public Urban Investment Bond Weighted Average Valuation Yield - Details the weighted average valuation yields of public urban investment bonds in different administrative levels and regions as of September 22, such as provincial, prefecture - level, and district - county levels in various provinces [15] Chart 6: Public Urban Investment Bond Weighted Average Spread - Displays the weighted average spreads of public urban investment bonds in different administrative levels and regions as of September 22 [17] Chart 7: Change in Public Urban Investment Bond Weighted Average Valuation Yield Compared to Last Week - Shows the changes in the weighted average valuation yields of public urban investment bonds in different administrative levels and regions as of September 22 compared to last week [19] Chart 8: Private Urban Investment Bond Weighted Average Valuation Yield - Presents the weighted average valuation yields of private urban investment bonds in different administrative levels and regions as of September 22 [23] Chart 9: Private Urban Investment Bond Weighted Average Spread - Displays the weighted average spreads of private urban investment bonds in different administrative levels and regions as of September 22 [25]

Group 1 - The core viewpoint of the news highlights the performance and liquidity of the credit bond ETF, specifically the Bosera Credit Bond ETF, which has shown a slight increase and strong trading volume in recent months [3][4] - As of September 16, the Bosera Credit Bond ETF has accumulated a 1.32% increase over the past six months, ranking it in the top quarter among comparable funds [3] - The ETF has a recent trading volume of 1.08 billion yuan, with an average daily trading volume of 2.8 billion yuan over the past year, ranking first among comparable funds [3] Group 2 - The recent monetary policy includes two buyout reverse repurchase operations in September, with a total of 9,000 billion yuan in six-month buyout operations planned [3] - The Ministry of Finance emphasized risk prevention and resolution in key areas during a press conference, focusing on local government debt management and the establishment of a legal debt management system [3] - Research institutions note that since July, the rebound in short-term and low-grade credit bond yields has been limited, but there are still favorable factors supporting credit bonds in September [4]

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - In August, the "stock - bond seesaw" effect was significant. Interest rates first declined and then rose. Credit bond yields generally followed the upward trend of interest - rate bonds. Short - duration varieties were more resistant to decline, while medium - and long - duration ones were weaker. Looking ahead to September, credit bonds still need defensive strategies [1][11][12]. - After the adjustment in August, some bank capital bonds have fallen to show relative value. For example, 3 - year AA and above second - tier capital bonds are oversold, and 4 - 5 - year large - bank capital bonds also have certain value for accounts with different liability characteristics [29][33][37]. 3. Summary According to the Directory 3.1 High - Coupon Short - Term Bonds as Shields, Oversold Perpetual and Second - Tier Capital Bonds as Spears 3.1.1 Credit Bond Defense with Short - and Medium - Duration - In August, the "stock - bond seesaw" effect was prominent. Short - end bonds outperformed long - end ones. Credit bond yields generally rose with interest - rate bonds. Short - duration credit bonds were more resistant to decline, and institutions further shortened the duration to within 3 years. The net buying scale of credit bonds decreased, and the trading activity also declined [1][11][12]. - In September, credit bonds need defense. Bank wealth - management scale usually declines at the end of the quarter, reducing the demand for credit bonds. Credit spreads are at a relatively low level, and institutions will pay more attention to controlling drawdowns when investing in credit bonds [16]. - There are two defensive ideas for credit bonds. One is to select high - coupon individual bonds within 3 years. The other is to appropriately allocate defensive varieties such as 1Y inter - bank certificates of deposit and 2Y commercial financial bonds, which have certain cost - effectiveness compared with medium - and short - term notes of the same term [3][19][22]. 3.1.2 Bank Capital Bonds: Opportunities Arising from Declines - In August, the yields of bank capital bonds generally rose, and spreads widened. After the adjustment, some varieties showed relative value. For example, 3 - year AA and above second - tier capital bonds were oversold, and the yields of 3 - year AA second - tier capital bonds were equivalent to those of 3 - year AA perpetual bonds [28][29][30]. - The yields of 4 - 5 - year large - bank capital bonds rose significantly in August. As the decline deepened, insurance, wealth - management, and other asset - management products increased their allocation. For accounts with stable liability ends, they are still cost - effective coupon assets. For accounts with unstable liability ends, it is recommended to follow the interest - rate bond market for right - side layout [33][36][37]. 3.2 Urban Investment Bonds: Supply Recovery, Short - End and Low - Rating Bonds Resistant to Declines - In August, the net financing of urban investment bonds was positive and increased year - on - year but decreased month - on - month. The issuance of long - duration bonds decreased, and the weighted average issuance interest rate increased. The net financing performance varied by province [39]. - The yields of urban investment bonds generally rose in August. Short - end and low - rating bonds were more resistant to decline, while 10 - year ultra - long - term bonds were the weakest. Credit spreads showed differentiation [45]. - The trading activity of urban investment bonds was not high in August. The proportion of TKN and low - valuation transactions decreased compared with July. Short - duration bonds had an increase in trading volume, while 3 - 5 - year bonds had weaker trading [51]. 3.3 Industrial Bonds: Supply Contraction, Yields Generally Rising - In August, the issuance and net financing of industrial bonds decreased year - on - year. The issuance sentiment weakened, and the issuance proportion of short - duration bonds within 1 year decreased, while the proportion of 1 - 3 - year bonds increased. The issuance interest rates rose across the board, with medium - and long - duration bonds having a larger increase [54]. 3.4 Bank Capital Bonds: Net Financing Turns Negative, Trading Sentiment is Weak No detailed content provided in the given text for this part other than the title. It can be inferred from the previous content that in August, the net financing of bank capital bonds may have turned negative, and the trading sentiment was weak as the yields generally rose and spreads widened, and the relative performance was inferior to that of general credit bonds [28].

Quantitative Credit Strategy - The short-end perpetual bond strategy has shown defensive attributes, with excess returns of 13.3bp for city investment short-end, 7.2bp for commercial bank bullet-type bonds, and 6.6bp for bank perpetual bonds over the past four weeks [2][11] - City investment strategies have underperformed compared to perpetual bond strategies, with cumulative returns deviating from the benchmark by -10bp and -30bp for duration and barbell strategies respectively, while perpetual bond bullet-type and sinking strategies achieved around 5bp of excess returns [2][11] Duration Tracking of Bond Types - As of August 24, the weighted average durations for city investment bonds and industrial bonds are 2.01 years and 2.60 years respectively, while the durations for secondary capital bonds, bank perpetual bonds, and general commercial bank bonds are 4.30 years, 3.77 years, and 2.75 years respectively [3][15] - Bank perpetual bonds are at a historically low level, and other financial bonds have shown slight increases in duration, with securities company bonds and subordinated bonds at low historical percentiles [3][15] Yield Heatmap of Bond Types - As of August 25, the valuation yields and spreads of private enterprise industrial bonds and real estate bonds are higher than other types [4][18] - Non-financial and non-real estate industrial bond yields have generally increased, particularly for medium to long-term bonds, with a 4.8bp rise in 3-5 year state-owned enterprise private non-perpetual bonds [4][18] Long-term Credit Bond Tracking - The trading sentiment for long-term credit bonds remains low, with a decline in transaction volumes for 7-10 year industrial bonds and 10-year-plus credit bonds at yearly lows [4][22] - The yield adjustments for bonds over 7 years have exceeded 10bp, with the yield spread between 7-year city investment bonds and 20-30 year government bonds nearing 50bp [4][22] Local Government Bond Supply and Trading Tracking - A total of 369.2 billion yuan in local government bonds were issued in the week of August 18-22, including 239.3 billion yuan in new special bonds and 73.5 billion yuan in refinancing special bonds [5][25] - The main investment areas for special bond funds are "special new special bonds" and "ordinary/project income," with 550 billion yuan of special refinancing bonds issued in August, accounting for 5.6% of the month's local bond issuance [5][25]

1. Report Industry Investment Rating - Not provided in the given content 2. Core View of the Report - As of July 28, 2025, the valuation yields and spreads of private enterprise industrial bonds and real estate bonds in the outstanding credit bonds are generally higher than other varieties. Compared with last week, the yields of non - financial and non - real estate industrial bonds have been adjusted, and the yields of state - owned enterprise private non - perpetual real estate bonds have increased across the board. In the financial bonds, the yields of various financial varieties have basically increased [3][4][13]. 3. Summary by Relevant Catalogs 3.1 Overall Credit Bond Situation - The weighted average valuation yields and spreads of different types of credit bonds (including urban investment bonds, industrial bonds, and financial bonds) are presented, along with their changes compared to last week [13][15][16]. 3.2 Urban Investment Bonds 3.2.1 Public Urban Investment Bonds - The weighted average valuation yields in Jiangsu and Zhejiang provinces are below 2.4%. Yields exceeding 4.5% are found in prefecture - level and district - county - level areas of Guizhou. Higher spreads are also observed in regions such as Guangxi, Yunnan, and Gansu. Compared with last week, the yields of public urban investment bonds have generally increased, with the 2 - 3 - year varieties having a larger adjustment range [3][26]. - Specific varieties with a large increase in yields include 2 - 3 - year Anhui provincial perpetual bonds, 1 - year - within Gansu prefecture - level non - perpetual bonds, 1 - 2 - year Liaoning prefecture - level non - perpetual bonds, and 2 - 3 - year Hainan provincial perpetual urban investment bonds [26]. 3.2.2 Private Urban Investment Bonds - The weighted average valuation yields in coastal provinces such as Shanghai, Zhejiang, Guangdong, and Fujian are below 2.9%. Yields higher than 4% are found in prefecture - level areas of Guizhou. Higher spreads are also present in Shaanxi, Yunnan, Gansu, etc. Compared with last week, the yields of private urban investment bonds have mainly increased. The varieties with a large increase in yields are 3 - 5 - year Guangxi district - county - level non - perpetual bonds, 1 - 2 - year Ningxia prefecture - level non - perpetual bonds, 2 - 3 - year Guizhou district - county - level non - perpetual bonds, and 1 - 2 - year Guangxi provincial non - perpetual urban investment bonds, with increases of 18.8BP, 15.6BP, 14.1BP, and 12.7BP respectively [3][40]. 3.3 Industrial Bonds - The valuation yields and spreads of private enterprise industrial bonds and real estate bonds are generally higher than other varieties. - For non - financial and non - real estate industrial bonds, the yields have been adjusted. The 2 - 3 - year private enterprise public perpetual varieties have a relatively larger increase, with an average increase of 147.5BP. In real estate bonds, the yields of state - owned enterprise private non - perpetual varieties have increased across the board, and the yields of 1 - 2 - year private enterprise public non - perpetual varieties have increased by 11.1BP [4][13]. 3.4 Financial Bonds - Varieties with high valuation yields and spreads include leasing company bonds, urban and rural commercial bank capital supplementary tools, and securities sub - bonds. - Compared with last week, the yields of various financial varieties have basically increased. In leasing bonds, the 1 - 2 - year varieties have a larger increase, with an average of about 10BP. In general commercial financial bonds, the interest rates of each variety have increased, with an amplitude of 4 to 7BP. In secondary perpetual bonds, the increase in the yields of rural commercial bank secondary capital bonds mostly exceeds that of other bank varieties, and the increase in the yields of rural commercial bank secondary bonds within 1 year and 2 - 3 years is greater than 20BP. In addition, in securities company bonds and sub - bonds, the increase in the yields of 3 - 5 - year securities company private non - perpetual sub - bonds exceeds 10BP [5][13].

Core Viewpoint - The public fund's second quarter reports highlight a significant focus on bond fund investment strategies, with many bond funds experiencing growth in both share and asset scale, reflecting a positive outlook for the bond market in the second half of the year [1]. Group 1: Bond Fund Performance - Multiple bond funds have reported substantial increases in total shares, with the Debon Rui Xing Bond Fund reaching 4.462 billion shares, a 65.44% increase from the previous quarter [2]. - The fixed income asset portfolio of the Debon Rui Xing Bond Fund expanded by 49.45% to 6.189 billion yuan, with various asset types showing increased fair value [2]. - Other products, such as the Huian Yongfu 90-day holding period short-term bond fund and Debon short-term bond fund, also saw their total shares double compared to the previous quarter [3]. Group 2: Market Trends and Strategies - The market's increasing demand for coupon-bearing assets indicates a growing recognition of the value of bond assets, as noted by industry experts [4]. - The bond market has experienced fluctuations in interest rates, with the 10-year government bond currently around 1.65%, leading to a more volatile environment [4]. - Fund managers are adopting refined duration management and cautious credit selection strategies to navigate interest rate volatility, adjusting their portfolios dynamically in response to market conditions [4]. Group 3: Future Outlook - Several institutions are optimistic about the bond market in the third quarter, citing supportive fiscal and monetary policies as key factors [6]. - The Debon Rui Xing Bond Fund's report indicates that ongoing domestic demand and fiscal stimulus measures are likely to create a favorable environment for the bond market [6]. - Expectations for monetary policy easing, including potential interest rate cuts, are anticipated to further drive down bond yields in the second half of the year [6].

Summary of Key Points from Conference Call Industry Overview - The focus is on the credit bond market, particularly the investment strategies for credit bonds in the second half of 2025, with an emphasis on high coupon assets due to their scarcity and the current credit cycle's limitations [1][2][3]. Core Insights and Arguments - **High Coupon Assets**: The scarcity of high coupon assets continues, making them a key strategy for credit bond investment. The credit cycle is unlikely to expand in the short term, and the monetary policy has shifted to support the market, leading to a downward trend in interest rates [1][2]. - **Government Bond Supply**: The supply of government bonds has been front-loaded this year compared to last year, which may affect market supply and demand dynamics. The government has relaxed constraints and increased leverage, resulting in a balanced supply curve for government bonds [8][9]. - **Credit ETF Policy**: The introduction of new policies for credit ETFs has enhanced market liquidity and increased demand for credit bond allocations. This allows various institutions to manage their investments more effectively [20][21]. - **High-Yield and City Investment Bonds**: There has been a rapid contraction in high-yield and city investment bonds, with a significant drop from 23 trillion yuan to 7 trillion yuan. Short-duration high-yield and city investment bonds are favored, and institutions are advised to adopt a moderately aggressive allocation strategy [5][23]. - **Fund Allocation Challenges**: Broad-based funds face limited allocation space, with a negative growth rate in the mid-to-short-term coupon asset sector. Institutions are encouraged to engage in diagonal trading to navigate this environment [6][22]. Additional Important Insights - **Market Dynamics**: The credit bond market is characterized by a supply-demand imbalance, with high coupon assets remaining scarce despite an increase in overall supply from various bond types [4][16]. - **Investment Strategy Recommendations**: The recommendation is to adopt an aggressive credit strategy, focusing on high-yield and city investment bonds, while being cautious of the overall credit risk environment [22][35]. - **Economic Environment**: The current economic conditions, interest rate trends, and credit risk environment suggest a continued preference for high coupon assets, with expectations of further compression in yield spreads [24][26]. - **Sector-Specific Insights**: The manufacturing sector shows signs of improvement, supported by policies encouraging consumption and equipment upgrades, although sustainability remains uncertain [32]. This summary encapsulates the critical insights and strategies discussed in the conference call, focusing on the credit bond market and its dynamics for the upcoming period.

Core Viewpoint - The investment strategy conference held by Ping An Fund highlighted the importance of embracing interest-bearing assets and participating in wave trading for the second half of 2025, while closely monitoring policy changes and economic data for effective risk management [1][2]. Economic Outlook - The economic fundamentals showed signs of recovery in the first half of 2025, but the internal momentum remains relatively weak. Real estate investment continues to drag, manufacturing investment is weak, and infrastructure investment, while gaining traction, is limited in strength. Consumer spending has rebounded with policy support, but overall growth still needs improvement [1]. - Exports are stable overall, but the growth rate is subject to significant fluctuations. Inflation indicators such as CPI and PPI are weak, reflecting insufficient total demand and low capacity utilization, resulting in limited inflationary pressure [1]. Monetary Policy and Market Environment - The central bank's goals have not yet adjusted, with maintaining growth and structural adjustments as primary objectives. Following the recent cuts in reserve requirements and interest rates, the cost of funds has effectively decreased, and weak credit may lead to continued monetary easing. Additionally, a reduction in deposit rates is anticipated to maintain bank interest margins [1][2]. - The bond market is currently in a favorable environment characterized by stable but weak fundamentals and a prudent monetary policy. The stability of the credit assets in the medium to short term can provide reliable interest income and arbitrage value [2]. Investment Strategy - Investors are encouraged to seize opportunities during market adjustments to accumulate interest income. The long-term assets, while stable, are unlikely to exceed expectations, and external demand pressures are expected to increase in the second half of the year due to export effects [2]. - Active participation in wave trading is recommended, as each market panic adjustment may present gaming value for investors [2].

Core Viewpoint - The credit bond ETF market has experienced unprecedented growth, with total scale surpassing 200 billion yuan, driven by a shift in investor preference towards stable income assets and supported by favorable policies [1][3][6]. Group 1: Market Growth and Scale - As of June 23, the total scale of credit bond ETFs reached 204.68 billion yuan, accounting for approximately 57% of the entire bond ETF market [3]. - The initial launch of eight benchmark market-making products at the beginning of the year laid the foundation for this growth, with their combined initial issuance scale of 21.71 billion yuan now exceeding 10 billion yuan each [3]. - The Huaxia Shanghai Stock Exchange Benchmark Market-Making Corporate Bond ETF has seen its scale grow from 3 billion yuan at the start of the year to over 20 billion yuan, contributing significantly to the overall growth of credit bond ETFs [3]. Group 2: Policy Support and Market Dynamics - Continuous policy support has been a driving force for the development of credit bond ETFs, including the inclusion of these products in the bond general repurchase pledge library [3]. - The announcement of the ability to conduct general pledge-style repurchase transactions for credit bond ETFs led to a significant increase in subscription volume, with the market value of newly listed corporate bond ETFs rising from 39.1 billion yuan to 64.9 billion yuan, a 66% increase [4]. Group 3: Product Characteristics and Investor Demand - Credit bond ETFs are characterized by low volatility, low cost, and high liquidity, making them an attractive option for investors seeking stable income assets in a market characterized by "asset scarcity" [2][5]. - The passive nature of bond funds has gained favor among institutions, leading to an expansion in the scale of credit bond ETFs as they offer a combination of lower risk and relatively stable returns [6]. Group 4: Performance and Cost Advantages - Credit bond ETFs have demonstrated robust long-term return capabilities, often outperforming actively managed credit bond funds in terms of returns while exhibiting lower volatility [8][9]. - The average management fee for credit bond ETFs is approximately 0.165%, with a total cost of around 0.22%, which is lower than the average fees for actively managed credit bond funds [10]. Group 5: Future Outlook and Investment Strategies - The demand for stable income assets is expected to continue rising, and credit bond ETFs are likely to become a preferred choice for more investors, with potential for further growth in scale [10]. - Investors are advised to select credit bond ETFs based on their specific needs, such as liquidity management or credit risk exposure, given the current market's limited variety of these products [11].