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化工行业周报20250608:国际油价上涨,丙烯酸、维生素价格下跌-20250609
Bank of China Securities· 2025-06-09 05:27
Investment Rating - The report rates the chemical industry as "Outperform" [2] Core Insights - The chemical industry has been significantly impacted by tariff-related policies and fluctuations in crude oil prices this year. Key areas of focus for June include safety regulations affecting the pesticide and intermediate sectors, performance volatility due to "export grabbing," the importance of self-sufficiency in electronic materials, and stable dividend policies in energy companies [2][4][11] - The report suggests a mid-to-long-term investment strategy focusing on high oil prices, the ongoing high demand in the oil and gas extraction sector, and the growth potential in new materials, particularly in electronic and renewable energy materials [4][11] Summary by Sections Industry Dynamics - As of June 8, the TTM price-to-earnings ratio for the SW basic chemicals sector is 22.18, at the 69.94 percentile historically, while the price-to-book ratio is 1.89, at the 29.26 percentile historically. For the SW oil and petrochemical sector, the TTM price-to-earnings ratio is 10.97, at the 17.71 percentile historically, and the price-to-book ratio is 1.14, at the 20.11 percentile historically [4][11] Price Changes - In the week of June 2-8, 2025, among 100 tracked chemical products, 17 saw price increases, 51 saw decreases, and 32 remained stable. The average price of hydrochloric acid rose by 31%, while vitamin E prices fell by 5.01% [10][30] Key Focus Areas - The report emphasizes the importance of monitoring the impact of safety regulations on the pesticide sector, the performance fluctuations of companies due to export dynamics, and the critical nature of self-sufficiency in electronic materials [4][11] - It also highlights the potential for recovery in demand due to policy support in 2025, particularly for leading companies in high-demand sub-sectors like fluorochemicals and vitamins [11][28]
港股高开低走。、香港恒生指数跌特朗普仍呼吁降息1个百分点。
Xin Yong An Guo Ji Zheng Quan· 2025-06-09 03:33
Market Overview - A-shares showed mixed performance with the Shanghai Composite Index up 0.04% at 3385.36 points, while the Shenzhen Component and ChiNext Index fell by 0.19% and 0.45% respectively[1] - The Hong Kong Hang Seng Index decreased by 0.48% to 23792.54 points, with the Hang Seng Tech Index and Hang Seng China Enterprises Index both down 0.63%[1] - The total market turnover in Hong Kong was HKD 235.62 billion[1] Economic Indicators - The U.S. non-farm payrolls increased by 139,000 in May, exceeding economists' expectations, while the unemployment rate remained stable at 4.2%[20] - The U.S. Treasury yields rose, with the 2-year Treasury yield increasing by 11.64 basis points to 4.0365% following the positive employment data[14] Trade Relations - U.S. and China officials are set to hold a new round of trade talks focusing on rare earth issues, following a recent phone call between the leaders of both countries[14] - President Trump has called for a 1% interest rate cut from the Federal Reserve, citing that Europe has already cut rates multiple times[14] Market Sentiment - The strong U.S. employment data has led traders to reduce their expectations for interest rate cuts this year, with the probability of a 25 basis point cut in September now estimated at around 70%[14] - The market is reacting cautiously to the ongoing trade tensions and economic uncertainties, with employers reportedly "stockpiling labor" amid concerns over tariffs and economic slowdown[14]
能源周报(20250602-20250608)
Huachuang Securities· 2025-06-09 00:15
Investment Rating - The report maintains a recommendation for the energy sector, indicating a positive outlook despite geopolitical risks and supply concerns [1]. Core Insights - Oil prices have increased due to supply disruptions caused by wildfires in Canada, which have shut down approximately 350,000 barrels per day of heavy crude oil production, representing about 7% of the country's oil output [11]. - The report highlights that geopolitical events, such as the Israel-Palestine conflict and the Russia-Ukraine situation, continue to support oil prices [11]. - The Brent crude oil price reached $67.47 per barrel, up 4.35% week-on-week, while WTI crude oil price was $63.35 per barrel, up 3.53% week-on-week [11]. - The report suggests that the demand for oil is expected to improve as tariff negotiations progress, which may alleviate investor concerns about demand [11]. Summary by Sections 1. Investment Strategy - **Crude Oil**: Global oil and gas capital expenditures have declined significantly since the Paris Agreement in 2015, with a notable drop of nearly 122% from 2014 highs. This has led to cautious capital spending among major oil companies, limiting supply recovery in the short term [9][32]. - **Coal**: The report notes stable coal prices at ports, with the average price of Qinhuangdao port coal (Q5500) at 609.25 RMB per ton, down 0.29% week-on-week. The overall coal supply remains sufficient despite some production cuts [12][13]. - **Coke**: The report indicates that coke prices have remained stable, with a price of 1410 RMB per ton. However, demand from downstream steel mills is weak, leading to expectations of further price reductions [14][15]. - **Natural Gas**: The EU plans to ban Russian natural gas imports by the end of 2027, which has faced opposition from France and Belgium. The average price of NYMEX natural gas increased by 9.5% to $3.72 per million British thermal units [16][17]. - **Oil Services**: The oil service sector is expected to see a recovery in activity due to increased capital expenditures driven by high oil prices and supportive policies [18][19]. 2. Major Energy Price Changes - The Huachuang Chemical Industry Index is reported at 76.13, down 2.11% week-on-week and down 24.46% year-on-year. The industry price percentile is at 20.34%, indicating a significant decline [20][22]. - The report summarizes that the largest price increases were seen in U.S. natural gas (+9.5%) and Brent crude oil (+4.3%), while the largest declines were in port coke (-3.4%) and Shanxi coke (-2.9%) [28][30].
潜能恒信:涠洲5-3油田开发项目正式投产
news flash· 2025-06-08 23:50
Group 1 - The core point of the article is that the project for the development of the Weizhou 5-3 oil field in the northern part of the South China Sea is set to officially commence production on June 6, 2025, through a collaboration between Wisdom Oil Investment Co., Ltd. and China National Offshore Oil Corporation (CNOOC) [1] - Wisdom Oil holds a 49% stake in the project, while CNOOC owns 51% [1] - The project plans to deploy a total of 10 development wells, which include 7 production wells, 2 water injection wells, and 1 gas injection well [1] Group 2 - The project will involve leasing an installation wellhead platform and constructing a mixed transmission subsea pipeline and subsea cable [1] - Adaptive modifications will be made to the platform to support the operations [1] - The completion of drilling and well completion for all 10 development wells is expected by 2026, with a peak production target of approximately 10,000 barrels of oil equivalent per day anticipated for that year [1]
金融工程专题研究:中证800自由现金流指数投资价值分析:从现金流到“现金牛”,值投资的新思路
Guoxin Securities· 2025-06-08 14:43
Quantitative Models and Construction Methods 1. Model Name: Free Cash Flow (FCF) - **Model Construction Idea**: Free cash flow represents the maximum cash amount distributable to capital providers without affecting the company's sustainable development. It is a key indicator of a company's ability to convert profits into freely distributable cash flow[1][10] - **Model Construction Process**: The formula for free cash flow is: $ FCF = EBITDA - CAPEX - NWC - Taxes $ Where: - EBITDA: Earnings before interest, taxes, depreciation, and amortization - CAPEX: Capital expenditures - NWC: Net working capital changes - Taxes: Tax payments Alternatively, the simplified formula is: $ FCF = Operating Cash Flow - CAPEX $ This simplification assumes that NWC changes are negligible compared to other components[10][11] Additionally, the Free Cash Flow Yield (FCF Yield) is calculated as: $ FCF Yield = FCF / Enterprise Value $ Where enterprise value is defined as: $ Enterprise Value = Market Capitalization + Total Debt - Cash $[11] - **Model Evaluation**: The FCF metric reduces the impact of financial manipulation and reflects the company's true operating conditions. It is more responsive to changes in company fundamentals compared to traditional metrics like net profit or revenue[11][24] 2. Model Name: CSI 800 Free Cash Flow Index - **Model Construction Idea**: This index selects 50 stocks with the highest free cash flow yield from the CSI 800 Index to reflect the performance of companies with strong cash flow generation capabilities[31][32] - **Model Construction Process**: - Sample Space: CSI 800 Index constituents - Screening Criteria: - Exclude financial and real estate sectors - Positive free cash flow and enterprise value - Positive net cash flow from operating activities for the past 5 years - Top 80% in profitability ranking - Selection Method: Rank stocks by free cash flow yield and select the top 50 - Weighting Method: Free cash flow-weighted - Rebalancing: Quarterly adjustments[32] - **Model Evaluation**: The index avoids exposure to financial and real estate sectors, focusing on industries with stable cash flows like energy and home appliances. It demonstrates a large-cap style and concentrated holdings, with long-term outperformance against the market and peer indices[33][36][40] --- Model Backtesting Results 1. Free Cash Flow (FCF) - **Annualized Return**: The FCF strategy shows strong performance in both loose monetary and tight credit environments, consistently delivering excess returns relative to the market[20][23] - **Macro Environment Suitability**: - In a low-interest-rate environment, companies with high FCF benefit from valuation uplift - During credit tightening, companies with strong internal FCF generation exhibit resilience[23] 2. CSI 800 Free Cash Flow Index - **Annualized Return**: 19.16% - **Annualized Sharpe Ratio**: 0.87 - **Annualized Volatility**: 23.16% - **Maximum Drawdown**: 43.56% - **Valuation Metrics**: - Price-to-Earnings (P/E): 10.95 - Price-to-Book (P/B): 1.48 - Dividend Yield: 4.32% Compared to the CSI 800 Index, the CSI 800 Free Cash Flow Index has lower valuation metrics, indicating a value-oriented style[47][48] --- Quantitative Factors and Construction Methods 1. Factor Name: Free Cash Flow Yield (FCF Yield) - **Factor Construction Idea**: FCF Yield is a valuation metric that adjusts free cash flow by enterprise value, providing a normalized measure of cash flow generation relative to the company's size[11] - **Factor Construction Process**: $ FCF Yield = FCF / Enterprise Value $ Where enterprise value is calculated as: $ Enterprise Value = Market Capitalization + Total Debt - Cash $[11] - **Factor Evaluation**: FCF Yield is more responsive to changes in company fundamentals compared to dividend yield, helping to avoid value traps where declining fundamentals lead to artificially high dividend yields[24][29] --- Factor Backtesting Results 1. Free Cash Flow Yield (FCF Yield) - **Performance in Macro Environments**: - Outperforms in loose monetary conditions (low interest rates) - Outperforms in tight credit conditions (declining social financing growth)[20][23] - **Sector Allocation Sensitivity**: - Reduces exposure to sectors like coal during downturns, avoiding potential losses - More responsive to fundamental changes compared to dividend yield factors[28][29] --- Composite Strategies and Results 1. Fixed Income Plus ("Fixed Income+") Strategy - **Construction**: Combine the CSI 800 Free Cash Flow Index (20%) with the ChinaBond Total Treasury Wealth Index (80%), rebalanced monthly[51] - **Performance**: - Annualized Return: 7.09% - Annualized Sharpe Ratio: 1.67 - Annualized Volatility: 4.16% - Maximum Drawdown: 4.60% Compared to the Wind Mixed Bond Secondary Index, the "Fixed Income+" strategy delivers higher returns with lower drawdowns[54] 2. Growth + Value "Barbell" Strategy - **Construction**: Combine the CSI 800 Free Cash Flow Index (50%) with the A-Share Advantage Growth 50 Index (50%), rebalanced monthly[56] - **Performance**: - Annualized Return: 20.15% - Annualized Sharpe Ratio: 0.91 - Annualized Volatility: 23.10% - Maximum Drawdown: 40.80% The strategy balances the strengths of growth and value styles, achieving higher overall returns with improved risk metrics compared to individual indices[59][60]
【石油化工】坚守长期主义之九:“三桶油”以自身发展确定性应对外部不确定性——石油化工行业周报第406期(赵乃迪/蔡嘉豪/王礼沫)
光大证券研究· 2025-06-08 13:28
点击注册小程序 2025 年以来地缘政治局势不确定性较强,我国能源安全受到较多外部挑战。" 三桶油"将继续维持高资本开 支,大力推进"增储上产", 2025 年计划分别增长 1.6% 、 1.3% 、 5.9% 。 ( 1 )中国石油 聚焦重点盆地重点 地区加大风险勘探力度,把天然气业务作为战略性、成长性和价值性工程大力发展, 2024 年天然气产量占油 气当量产量的 54.4% ,持续推动非常规油气勘探突破与规模建产。 ( 2 )中国石化 将加快攻克深层超深层油 气等核心技术,实现勘探大突破、油气稳增长、盈亏平衡点持续下降,促进上游业务的可持续发展。 ( 3 ) 中国海油 在国内推动新油田上产和老油田稳产, 2025 年已有番禺 10/11 区块联合开发项目、东方 29-1 气田开 发项目、渤中 26-6 油田开发项目(一期)等多项目投产。 坚持自主创新强化科技攻关,谋求高质量发展 " 三桶油 " 加强自主创新,大力攻关石油化工领域的 " 卡脖子 " 技术,推动公司实现高质量发展。 中国石油 制定创新任务时间表,确定 2025 年至本世纪中叶的四阶段发展目标, 2024 年,中国石油取得深地钻探关键技 术、 ...
石油化工行业周报:卡塔尔项目即将带动LNG供给走向宽松,国际气价中枢有望下行-20250608
Shenwan Hongyuan Securities· 2025-06-08 12:45
Investment Rating - The report maintains a "Positive" outlook on the petrochemical industry, indicating favorable conditions for investment opportunities [1]. Core Insights - Qatar's LNG projects are expected to lead to a loosening of global LNG supply, with international gas prices likely to decline. Qatar's LNG production capacity is projected to reach 142 million tons by the end of 2030, nearly doubling from 77 million tons in 2020 [3][4]. - The report highlights that while global gas demand growth is expected to slow to around 1.5% in 2025, LNG demand in Asia will be significantly suppressed due to high prices, dropping from a growth rate of 17% in 2024 to below 3% [6][14]. - The upstream sector is experiencing rising oil prices, with Brent crude futures closing at $66.47 per barrel, a 4.02% increase week-on-week. The report anticipates a downward trend in oil prices due to a widening supply-demand balance [23][39]. - In the refining sector, the report notes a decline in overseas refined oil crack spreads, while olefin price spreads show mixed trends. The Singapore refining margin has decreased to $12.55 per barrel [53][55]. - The polyester sector is facing a decline in PTA profitability, while polyester filament profitability is on the rise. The report suggests that the overall performance of the polyester industry is average, with potential for improvement as new capacity slows down [53][60]. Summary by Sections LNG Supply and Demand - Qatar's LNG projects, including the Golden Pass LNG and North Field East expansion, are set to boost global LNG supply significantly by 2030 [4][5]. - The International Energy Agency (IEA) forecasts a 50% increase in global export capacity by 2030, with an additional 270 billion cubic meters expected [5][6]. Upstream Sector - Brent crude prices have risen, with a notable increase in drilling day rates for self-elevating platforms. The report indicates a potential for oil prices to decline in the medium term, despite current upward trends [23][39]. - The report also notes a decrease in the number of active drilling rigs in the U.S., which may impact future production levels [33]. Refining Sector - The report highlights a decrease in refining margins and crack spreads, indicating challenges in profitability for refiners. However, it suggests that domestic refining margins may improve as overseas refineries exit the market [53][55]. Polyester Sector - The report indicates a mixed performance in the polyester sector, with PTA profitability declining while polyester filament profitability is improving. It emphasizes the need to monitor demand changes closely [53][60]. Investment Recommendations - The report recommends focusing on high-quality refining companies such as Hengli Petrochemical, Rongsheng Petrochemical, and Sinopec, as well as companies in the upstream exploration and development sector like CNOOC and CNOOC Engineering [17].
原油周报:俄乌冲突升温,国际油价震荡-20250608
Soochow Securities· 2025-06-08 12:35
1. Report Industry Investment Rating - Not provided in the given content 2. Core Viewpoints of the Report - This week, the average weekly prices of Brent/WTI crude oil futures were $65.4/$63.3 per barrel, up $1.0/$2.2 per barrel from last week [2]. - The total US crude oil inventory, commercial crude oil inventory, strategic crude oil inventory, and Cushing crude oil inventory were 8.4/4.4/4.0/0.2 billion barrels, with a week - on - week change of - 379/-430/+51/+58 thousand barrels [2]. - The US crude oil production was 13.41 million barrels per day, up 10 thousand barrels per day week - on - week. The number of active US crude oil rigs this week was 442, down 19 week - on - week. The number of active US fracturing fleets this week was 186, down 4 week - on - week [2]. - The US refinery crude oil processing volume was 17 million barrels per day, up 670 thousand barrels per day week - on - week; the US refinery crude oil utilization rate was 93.4%, up 3.2 percentage points week - on - week [2]. - The US crude oil imports, exports, and net imports were 6.35/3.91/2.44 million barrels per day, with a week - on - week change of - 1/-39/+39 thousand barrels per day [2]. - The average weekly prices of US gasoline, diesel, and jet fuel were $87/$87/$89 per barrel, with a week - on - week change of - $0.3/+$0.5/ - $5.1 per barrel; the spreads to crude oil were $21/$22/$23 per barrel, with a week - on - week change of - $1.0/ - $0.2/ - $5.8 per barrel [2]. - The US gasoline, diesel, and aviation kerosene inventories were 2.3/1.1/0.4 billion barrels, up 522/423/94 thousand barrels week - on - week [2]. - The US gasoline, diesel, and aviation kerosene production were 9.04/4.99/1.89 million barrels per day, with a week - on - week change of - 71/+18/+4 thousand barrels per day [2]. - The US gasoline, diesel, and aviation kerosene consumption were 8.26/3.15/1.76 million barrels per day, with a week - on - week change of - 119/ - 74/ - 2 thousand barrels per day [2]. - Recommended companies include CNOOC Limited (600938.SH/0883.HK), PetroChina Company Limited (601857.SH/0857.HK), Sinopec Corp. (600028.SH/0386.HK), etc. Companies to be noted include Sinopec Oilfield Service Corporation (600871.SH/1033.HK), China Petroleum Engineering & Construction Corporation (600339.SH), etc [3]. 3. Summary by Relevant Catalogs 3.1 Crude Oil Weekly Data Briefing - Data sources include Bloomberg, WIND, EIA, TSA, Baker Hughes, and Dongwu Securities Research Institute [8][9] 3.2 This Week's Performance of the Petroleum and Petrochemical Sector 3.2.1 Performance of the Petroleum and Petrochemical Sector - Data on the percentage changes in the rise and fall of various industry sectors and the petroleum and petrochemical sub - sectors are presented, but specific values are not fully detailed in the provided text [14][19] 3.2.2 Performance of Listed Companies in the Sector - Performance data such as the rise and fall percentages, latest prices, and market capitalizations of upstream listed companies in the past week, month, three months, one year, and since the beginning of 2025 are provided [24]. - Valuation data including stock prices, total market capitalizations, net profits attributable to the parent company, P/E ratios, and P/B ratios of listed companies from 2024 to 2027 are presented [26]. 3.3 Crude Oil Sector Data Tracking 3.3.1 Crude Oil Prices - Data on the prices and spreads of Brent, WTI, Urals, ESPO crude oils, as well as the relationships between copper prices, the US dollar index, and WTI crude oil prices are presented [31][33][40] 3.3.2 Crude Oil Inventory - Data on the US total crude oil inventory, commercial crude oil inventory, strategic crude oil inventory, and Cushing crude oil inventory are provided, including historical data and week - on - week changes [54][55][62] 3.3.3 Crude Oil Supply - The US crude oil production, number of active crude oil rigs, and number of active fracturing fleets are presented, along with their relationships with oil prices [67][68] 3.3.4 Crude Oil Demand - Data on the US refinery crude oil processing volume, refinery utilization rate, and Shandong refinery utilization rate are provided [71][76] 3.3.5 Crude Oil Imports and Exports - Data on the US crude oil imports, exports, net imports, and the imports, exports, and net imports of crude oil and petroleum products are presented [78][81] 3.4 Refined Oil Sector Data Tracking 3.4.1 Refined Oil Prices - Data on the prices and spreads of crude oil and refined oils (gasoline, diesel, jet fuel) in the US, Europe, and Singapore are presented [88][97][103] 3.4.2 Refined Oil Inventory - Data on the inventories of gasoline, diesel, and jet fuel in the US and Singapore are provided [118][123][130] 3.4.3 Refined Oil Supply - Data on the production of gasoline, diesel, and jet fuel in the US are presented [137] 3.4.4 Refined Oil Demand - Data on the consumption of gasoline, diesel, and jet fuel in the US, as well as the number of US airport passenger security checks, are provided [140][144][146] 3.4.5 Refined Oil Imports and Exports - Data on the imports, exports, and net exports of gasoline, diesel, and jet fuel in the US are presented [152][155][157] 3.5 Oilfield Services Sector Data Tracking - Data on the average daily rates of jack - up drilling platforms and semi - submersible drilling platforms in the industry are presented [165][166]
石油化工行业周报第405期:坚守长期主义之九:“三桶油”以自身发展确定性应对外部不确定性-20250608
EBSCN· 2025-06-08 12:18
Investment Rating - The report maintains an "Accumulate" rating for the oil and petrochemical industry [6] Core Viewpoints - The geopolitical tensions combined with OPEC+'s willingness to increase production create significant uncertainty in oil prices, with Brent and WTI crude oil prices reported at $66.65 and $64.77 per barrel respectively, reflecting increases of 6.5% from the previous week [1][10] - The "Three Oil Giants" (China National Petroleum Corporation, Sinopec, and CNOOC) are focusing on increasing reserves and production to address external energy security challenges, with capital expenditures planned to grow by 1.6%, 1.3%, and 5.9% respectively in 2025 [2][11] - The companies are enhancing their technological capabilities to achieve high-quality development, with significant advancements in key technologies expected by 2024 [3][27] - A strategic shift towards energy transition is evident, with investments in renewable energy and carbon capture projects being prioritized [4][32] Summary by Sections Oil Price Dynamics - Geopolitical conflicts have led to a rebound in oil prices, with a potential increase in geopolitical risk premium, although OPEC+'s production increase may exert downward pressure on prices [1][10] Upstream Strategies - The "Three Oil Giants" are committed to high capital expenditures to boost oil and gas production, with specific growth targets for 2025 [2][11] - China National Petroleum Corporation is focusing on natural gas as a strategic growth area, aiming for natural gas to constitute 54.4% of its total production by 2024 [18] Technological Innovation - The companies are investing in technology to overcome critical challenges in the oil and petrochemical sectors, with a focus on deep drilling and unconventional resources [3][27] - Significant technological breakthroughs are anticipated in 2024, including advancements in deep drilling and catalyst applications [26][27] Energy Transition Initiatives - The "Three Oil Giants" are actively pursuing green and low-carbon transitions, with substantial investments in renewable energy projects and infrastructure [4][28] - China National Petroleum Corporation plans to establish over 10 million kilowatts of wind and solar power capacity by 2024, alongside significant hydrogen production [28][34]
基础化工行业周报:铬盐逻辑再加强,中策橡胶上交所主板上市-20250608
Guohai Securities· 2025-06-08 09:30
Investment Rating - The industry investment rating is "Recommended" (maintained) [1] Core Views - The chemical industry is expected to enter a replenishment cycle, driven by the recovery of demand and limited supply in certain sectors [30] - The chromium salt and phosphate rock sectors are highlighted as key areas of focus due to their potential for growth and value reassessment [4][6] - The report emphasizes the importance of companies with cost advantages and stable market positions, particularly in the context of rising prices for key products [10][30] Summary by Sections Recent Performance - The basic chemical sector has shown a performance increase of 2.4% over the last month, 1.0% over the last three months, and 8.9% over the last year, outperforming the CSI 300 index [3] Key Opportunities - Focus on chromium salt and phosphate rock industries, with expectations of continued demand growth in fine phosphorus chemicals and lithium iron phosphate batteries [7] - Companies like Zhuhai Holdings and Baitian Co. are noted for their capacity expansions and potential for increased profitability [7][9] Price Trends - Recent price adjustments include a decrease in metal chromium prices from 76,000 yuan/ton to 73,000 yuan/ton, reflecting market fluctuations and demand shifts [5][17] - Phosphate rock prices are stable at 1,038 yuan/ton, with expectations of a reassessment of value due to supply constraints [19] Company Focus - Companies such as Zhuhai Holdings and Baitian Co. are highlighted for their strategic advantages in technology innovation, cost reduction, and capacity expansion [5][7] - The report suggests that leading companies in the chemical sector are entering a long-term upward performance cycle, supported by their competitive advantages [8][30] Investment Recommendations - The report recommends a focus on companies with low-cost expansion capabilities, such as Wanhu Chemical and Yantai Chemical, as well as those in the chromium salt and phosphate rock sectors [9][10] - High dividend yield companies, particularly state-owned enterprises, are also recommended for their stable returns and resource advantages [10][11]