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能源化工期权策略早报-20250724
Wu Kuang Qi Huo· 2025-07-24 01:25
能源化工期权 2025-07-25 能源化工期权策略早报 表2:期权因子—量仓PCR | 期权品种 | 标的合约 | 最新价 | 涨跌 | 涨跌幅 | 成交量 | 量变化 | 持仓量 | 仓变化 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | (%) | (万手) | | (万手) | | | 原油 | SC2509 | 506 | 2 | 0.42 | 12.88 | -1.49 | 3.63 | -0.03 | | 液化气 | PG2509 | 3,972 | 0 | 0.00 | 10.18 | -2.44 | 9.23 | 0.46 | | 甲醇 | MA2509 | 2,469 | 39 | 1.60 | 86.70 | -19.26 | 66.66 | 0.60 | | 乙二醇 | EG2509 | 4,467 | 27 | 0.61 | 17.03 | -7.76 | 26.25 | -0.62 | | 聚丙烯 | PP2509 | 7,145 | 19 | 0.27 | 33.82 | -5.76 | 35 ...
新世纪期货交易提示(2025-7-24)-20250724
Xin Shi Ji Qi Huo· 2025-07-24 01:25
1. Report Industry Investment Ratings - **Black Industry**: Iron ore - Oscillation; Coal and coke - Uptrend; Rolled steel - Oscillation; Glass - Uptrend; Soda ash - Bullish [2] - **Financial Industry**: Shanghai 50 Index - Rebound; CSI 300 Index - Oscillation; CSI 500 Index - Oscillation; CSI 1000 Index - Oscillation; 2 - year Treasury bond - Oscillation; 5 - year Treasury bond - Oscillation; 10 - year Treasury bond - Rebound; Gold - Oscillation; Silver - Bullish operation [3][4][6] - **Light Industry**: Pulp - Correction; Log - Correction [6] - **Oil and Fat Industry**: Soybean oil - Oscillation and correction; Palm oil - Oscillation and correction; Rapeseed oil - Oscillation and correction [6] - **Feed Industry**: Soybean meal - Oscillation and correction; Rapeseed meal - Oscillation and correction; Soybean No. 2 - Oscillation and correction; Soybean No. 1 - Oscillation and correction [8] - **Agricultural Products Industry**: Live pigs - Oscillation and weakness [8] - **Soft Commodities Industry**: Rubber - Oscillation; PX - Wait - and - see; PTA - Wait - and - see; MEG - Wait - and - see; PR - Wait - and - see; PF - Wait - and - see [10] 2. Core Views - The black industry is affected by policies such as "anti - involution" and the expectation of stable growth in the steel industry. The short - term market sentiment is boosted, but the medium - and long - term supply - demand situation varies by product [2]. - The financial market is influenced by factors such as Sino - US economic and trade negotiations, the start of the full - island customs closure operation in Hainan Free Trade Port, and central bank operations. The upward momentum of the market weakens, and risk preferences decline [3][4]. - In the precious metals market, the pricing mechanism of gold is changing, and the Fed's interest rate and tariff policies, as well as geopolitical conflicts, affect the market sentiment [4][6]. - The pulp and log markets show a pattern of weak supply and demand, and prices are expected to correct [6]. - The oil and fat and feed markets are affected by factors such as production, inventory, and trade agreements. After previous rises, prices may oscillate and correct in the short term [6][8]. - The live pig market is affected by factors such as temperature, slaughter enterprise procurement, and supply - demand relationship. The average transaction weight may decline slightly, and prices may also weaken [8]. - The rubber market is affected by weather, production, demand, and inventory. Prices are expected to maintain a wide - range oscillation [10]. - The polyester industry is affected by factors such as supply - demand relationship and cost. Most products are in a wait - and - see state [10]. 3. Summaries by Related Catalogs Black Industry - **Iron Ore**: The global iron ore shipping volume increases, and the supply is still abundant. In the short term, the fundamentals are acceptable, but in the medium and long term, the supply - demand surplus pattern remains. It follows the trend of finished products, and attention should be paid to the support at 800 yuan/ton [2]. - **Coal and Coke**: The expectation of anti - involution policies and supply - side policies boosts market sentiment. After the second price increase, the cost of coke still has pressure, and the market's bullish expectation is enhanced. It is expected to oscillate strongly in the short term [2]. - **Rolled Steel (Thread Steel)**: The "anti - involution" policy stimulates supply - side sentiment, but the overall demand is weak. In the short term, it is supported by policies, and attention should be paid to the Politburo meeting at the end of July [2]. - **Glass**: The "anti - involution" trading may continue. The demand side has weakening real demand but strong speculative demand. The supply side has increasing production pressure. In the long term, the demand is difficult to recover significantly [2]. - **Soda Ash**: It is bullish in the short term, and attention should be paid to the real demand and supply - side trends [2]. Financial Industry - **Stock Index Futures/Options**: The market upward momentum weakens, and it is recommended to reduce long positions in stock index futures [3][4]. - **Treasury Bonds**: The market interest rate is consolidating, and long positions in treasury bonds can be held lightly [3][4]. - **Precious Metals**: The pricing mechanism of gold is changing. In the short term, it is affected by the Fed's policies and geopolitical factors. Silver is bullish [4][6]. Light Industry - **Pulp**: The cost price decline weakens the support for pulp prices. The paper industry has low profitability and high inventory pressure, and pulp prices are expected to correct [6]. - **Log**: The supply pressure is not large, but the anti - involution sentiment weakens, and log prices are expected to correct [6]. Oil and Fat Industry - **Soybean Oil, Palm Oil, Rapeseed Oil**: Supply is abundant, and it is the off - season for demand. Although supported by the bio - diesel expectation, prices may oscillate and correct in the short term after previous rises [6]. Feed Industry - **Soybean Meal, Rapeseed Meal, Soybean No. 2, Soybean No. 1**: Affected by factors such as US soybean production, inventory, and trade agreements, prices may oscillate and correct in the short term after previous rises [8]. Agricultural Products Industry - **Live Pigs**: The average transaction weight may decline slightly, and prices may weaken due to factors such as supply increase and demand suppression by high temperatures [8]. Soft Commodities Industry - **Rubber**: Affected by weather, production, demand, and inventory, prices are expected to maintain a wide - range oscillation [10]. - **PX, PTA, MEG, PR, PF**: Most products in the polyester industry are affected by supply - demand and cost factors and are in a wait - and - see state [10].
【期货热点追踪】广期所四箭齐发紧急降温!多晶硅、工业硅价格回落,后市该如何布局?点击了解。
news flash· 2025-07-24 01:20
相关链接 期货热点追踪 广期所四箭齐发紧急降温!多晶硅、工业硅价格回落,后市该如何布局?点击了解。 ...
研究所晨会观点精萃-20250724
Dong Hai Qi Huo· 2025-07-24 01:12
Report Industry Investment Rating No relevant content provided. Core Viewpoints of the Report - Overseas, the US has reached trade agreements with Japan and is likely to reach one with the EU, leading to a decline in market risk - aversion and a continued rise in global risk appetite. Domestically, China's economic growth in H1 was higher than expected, but consumption and investment slowed in June. Policy measures are expected to boost domestic risk appetite. [2] - Different asset classes have different short - term trends: stocks are expected to be slightly stronger in the short - term; bonds may experience a high - level correction; commodities in different sectors have different trends, with some being slightly stronger and some being volatile. [2] Summary by Related Catalogs Macro - finance - **Macro situation**: Overseas, the US - Japan trade agreement sets a 15% tariff rate on Japan, and the probability of the US - EU trade agreement has increased. Market risk appetite has risen, and the US dollar index is weak. Domestically, H1 economic growth was higher than expected, but June consumption and investment slowed. Policy measures aim to boost domestic risk appetite. [2] - **Asset trends**: Stocks are expected to be slightly stronger in the short - term and it's advisable to be cautiously long; bonds are expected to correct at a high level and it's advisable to wait and see; for commodities, black metals may have increased short - term fluctuations and it's advisable to be cautiously long; non - ferrous metals may rebound with short - term fluctuations and it's advisable to be cautiously long; energy and chemicals may fluctuate and it's advisable to wait and see; precious metals may be volatile at a high level and it's advisable to be cautiously long. [2] Stock Index - The domestic stock market continued to rise, driven by sectors such as hydropower, securities, insurance, and kitchen and bathroom appliances. The short - term macro upward drive has strengthened, and attention should be paid to the progress of Sino - US trade negotiations and the implementation of domestic incremental policies. It's advisable to be cautiously long in the short - term. [3] Precious Metals - The precious metals market declined on Wednesday. With the approaching tariff deadline on August 1st, market risk appetite has recovered, putting pressure on precious metals. The Fed's interest - rate cut expectation has slowed. In the short - term, precious metals are expected to be volatile at a high level, and gold still has strategic allocation value in the long - term. [3] Black Metals - **Steel**: Steel futures and spot prices continued to rebound. The "anti - involution" policy supports the cost of steel, and the actual demand is okay. The supply increase space is limited in the short - term. It's advisable to view the steel market as slightly stronger with fluctuations in the short - term. [4][5] - **Iron ore**: Iron ore futures and spot prices weakened on Wednesday. The iron - water output is at a high level with limited upward space. The supply and demand situation is complex, and it's advisable to view the price as range - bound in the short - term. [5] - **Silicon manganese/silicon iron**: The prices of silicon manganese and silicon iron may rebound following coal prices. The production situation of silicon manganese is relatively stable, and the mentality of silicon - iron merchants is positive. [6] Chemicals - **Soda ash**: The soda ash futures contract was weak on Wednesday. The supply is still in an oversupply situation, the demand is weak, and the profit has declined. The "anti - involution" policy supports the bottom price, but the long - term price is still under pressure. [7] - **Glass**: The glass futures contract was weak on Wednesday. The supply pressure is increasing, the demand is weak, and the profit has increased. The "anti - involution" policy supports the price. [8] Non - ferrous Metals and New Energy - **Copper**: The US - Japan trade agreement has an impact on the market. The short - term sentiment is boosted by the industrial policy, but the future copper price depends on the tariff implementation time. [9] - **Aluminum**: The aluminum price fell, following the alumina trend. The fundamental situation is weak, and the policy impact is limited. It's not advisable to short for now. [9] - **Aluminum alloy**: The supply of scrap aluminum is tight, and the demand is in the off - season. The short - term price is expected to be slightly stronger with fluctuations, but the upward space is limited. [10] - **Tin**: The supply is recovering, the demand is weak, and the price is expected to be volatile in the short - term, with upward pressure in the medium - term. [10] - **Lithium carbonate**: The lithium carbonate futures price fell. The production has increased, and the inventory is accumulating. The short - term price is expected to be slightly stronger with fluctuations due to the "anti - involution" policy. [11] - **Industrial silicon**: The industrial silicon futures price rose. The "anti - involution" policy drives the price, and it's expected to be slightly stronger with fluctuations in the short - term. [11][12] - **Polysilicon**: The polysilicon futures price rose significantly. The short - term price is expected to be slightly stronger with fluctuations, and attention should be paid to market feedback and capital changes. [12] Energy and Chemicals - **Crude oil**: The news of possible progress in US - EU trade negotiations has offset the impact of weak spot markets. However, the increase in Cushing crude oil inventory and upcoming Sino - US trade negotiations bring uncertainties. The oil price is expected to be mainly volatile. [13] - **Asphalt**: The asphalt price has回调. The demand in the peak season is average, and the inventory is not being effectively reduced. The short - term price will follow the crude oil price but may be weak with fluctuations. [13] - **PX**: The PX price is in a slightly stronger range - bound situation. The supply is tight, but the upward space is limited. [14] - **PTA**: The PTA price is expected to be volatile. The demand is in the off - season, and the processing fee is low, with a risk of production reduction. [14] - **Ethylene glycol**: The ethylene glycol price is oscillating at the support level. The inventory is slightly decreasing, and the price is expected to be volatile. [14] - **Methanol**: The methanol price is short - term strong but limited by the fundamentals. The inventory has increased, and attention should be paid to capital flow. [16] - **PP**: The PP price has risen due to policy expectations, but the supply pressure is increasing, and the demand is in the off - season. The long - term price is under pressure. [17] - **PL**: The PL price has limited upward drivers due to supply pressure and weak demand. The price may be volatile due to new listing and policy impact. [17] - **LLDPE**: The LLDPE price has adjusted. The import arbitrage window is open, and the demand is weak. The short - term price may rebound but has limited space, and the long - term price may decline. [18] - **Urea**: The urea price has risen due to market sentiment, but the demand is weakening, and the supply is abundant. The price is expected to be weak with fluctuations. [18][19] Agricultural Products - **US soybeans**: The price of US soybeans has been affected by weather. The expected rainfall may limit crop pressure. [20] - **Soybean and rapeseed meal**: It's advisable to increase long positions in US soybeans above 1000. The short - term price of soybean meal is still strong, but the upward space is limited. [20] - **Soybean and rapeseed oil**: The inventory pressure of soybean oil is high, and the demand is in the off - season. The price of rapeseed oil may decline if palm oil corrects. The soybean - palm oil spread may widen. [21] - **Palm oil**: It's a short - term bull market for palm oil, but the upward resistance is increasing. It's advisable to be cautious when chasing orders. [21] - **Pigs**: The supply of pigs is increasing, and the demand is weak. The short - term price is testing the support level. Policy rumors have affected the futures price, but the long - term price increase is limited. [22] - **Corn**: The corn price has slightly rebounded. The supply is gradually tightening, but the demand is in the off - season. The price is expected to be in a narrow - range oscillation in the short - term. [22][23]
济南|济南“三把钥匙”破解外贸逆境
Da Zhong Ri Bao· 2025-07-24 00:45
Core Viewpoint - Jinan has achieved significant growth in foreign trade, with a total import and export value of 1240.9 billion yuan in the first half of 2025, marking a year-on-year increase of 25.9%, outperforming national and provincial averages by 23 and 19.1 percentage points respectively [2] Group 1: Technological Innovation - The export of Y-shaped transition forgings by Yilite Energy Equipment Co., Ltd. to the Middle East signifies international recognition of its technology [2] - Yilite's exports have surged, with major products including wind power flanges and large ring forgings, reaching over 30 countries [2] - The company is set to enhance its production capacity with a new project aimed at producing oversized key forging components by 2026 [3] Group 2: Industry Transformation - Jinan's manufacturing sector is shifting from cost competition to technology leadership, with high-tech product exports reaching 131.6 billion yuan, an increase of 11.1% [4] - Self-branded products accounted for 392.4 billion yuan in exports, growing by 11.3% and making up nearly half of the city's total exports [4] - The export value of new energy vehicles has increased significantly, exceeding 300 million yuan, a growth of 3.5 times [4] Group 3: Ecological Innovation - Shandong Energy Group International Trade Development Co., Ltd. achieved 44.5 billion yuan in foreign trade in the first half of the year, with total revenue exceeding 77 billion yuan [5] - The company has successfully recruited foreign trade talent and expanded its market presence [5] Group 4: Policy Innovation - The issuance of a certificate of origin for Shandong Shengquan New Materials Co., Ltd. has enabled tariff reductions, with exports exceeding 1.2 billion yuan in the first five months [8] - The customs authority has streamlined the certificate issuance process, enhancing trade flexibility and competitiveness [8] - In the first half of the year, the customs issued 27,144 certificates of origin, amounting to 135.24 billion yuan, resulting in an estimated tax reduction of 21.1 million yuan for enterprises [9]
湖北9家企业上榜《财富》中国500强 总营收1470.14亿美元增长11.69%
Chang Jiang Shang Bao· 2025-07-23 23:27
Group 1 - The 2025 Fortune China 500 list ranks State Grid Corporation at the top with a revenue of $548.41 billion, followed by China National Petroleum and China Petroleum & Chemical with revenues of $412.65 billion and $407.49 billion respectively [1][2] - Hubei province has 9 companies on the list, maintaining the same number as in 2024, with a total revenue of $147.01 billion, an increase of $15.38 billion or 11.69% year-on-year [1][3] Group 2 - The 9 companies from Hubei include Dongfeng Motor Group ($51.31 billion, rank 73), Zall Smart ($22.57 billion, rank 160), Hubei Lian Investment Group ($21.10 billion, rank 164), and others, with 5 companies showing improved rankings [2][3] - Hubei Lian Investment is the only new entrant this year, while Tianmao Group dropped off the list. Five companies improved their rankings significantly, with Zall Smart rising 22 places and Wenta Technology rising 46 places [3][4] Group 3 - The revenue threshold for the 2025 list is approximately $3.62 billion, a decrease of about 3% from 2024 [4] - The total revenue of the 500 companies on the list is about $14.2 trillion, a decrease of approximately 2.7% from the previous year, while net profit increased by about 7% to $756.4 billion [3][4] Group 4 - Dongfeng Motor is focusing on new energy and intelligent connected vehicles, aiming for rapid revenue growth and improved profitability [5][6] - YF Communication is expanding into strategic emerging industries like network security and AI, achieving breakthroughs in radiation-resistant fiber optic cables [5][6] - Hubei Lian Investment is enhancing its core competitiveness through innovation in fine chemicals, new materials, and new energy, reporting significant revenue and profit growth in the first half of 2025 [6][7] - Jiuzhoutong is transforming its development strategy to enhance its position as a leading pharmaceutical distributor, emphasizing legal and risk management for sustainable growth [7] - Huaxin Cement is a major supplier for large hydropower projects, having supplied over 2 million tons of cement, showcasing its high-quality products in significant infrastructure projects [7]
中美下周在瑞典举行经贸会谈,外界期待双方达成进一步共识
Huan Qiu Shi Bao· 2025-07-23 23:03
彭博社称,这一声明进一步表明紧张局势正在缓和。报道还提到,此前,美国撤销了对英伟达向中国出 口H20芯片的禁令。中美5月和6月在瑞士日内瓦、英国伦敦分别举行了两次会谈,取得暂停征收高额关 税、取消出口限制等成果。 中国国际贸易学会中美欧研究中心主任何伟文认为,此次会谈重要的是延续前两次会谈的成果,把中美 达成的协议框架进一步具体化,并争取更多具体成果。"第一是关税遗留的问题,特别是美方以芬太尼 为名目征收的关税得到解决;第二是中美两国如何进一步开展经贸合作。" 中国社科院世界经济与政治研究所研究员高凌云23日在接受《环球时报》记者采访时表示,鉴于此前两 轮会谈取得了一定成果,外界期待双方能在定于瑞典举行的新一轮会谈中达成进一步共识。"对话与接 触始终优于对抗,因为这将有助于为两国及其他国家的企业营造一个更加可预测的环境。" 【环球时报报道 记者 李萌 刘洋 褚大业】中国商务部新闻发言人23日宣布,经中美双方商定,中共中央 政治局委员、国务院副总理何立峰将于7月27日至30日赴瑞典与美方举行经贸会谈。此前一天,美国财 政部长贝森特在接受美媒采访时表示,他将于28日、29日在斯德哥尔摩同中方代表举行第三轮贸易谈 ...
丙烯期货上市赋能行业风险管理
Jing Ji Ri Bao· 2025-07-23 22:11
Core Viewpoint - The launch of propylene futures and options on the Zhengzhou Commodity Exchange marks a significant development in China's chemical industry, enhancing risk management capabilities within the propylene supply chain and contributing to the overall stability of the chemical market [1][5]. Industry Overview - The chemical industry is a cornerstone of modern industrial development, with propylene being a key basic chemical product. It has a wide range of applications in various sectors, including home appliances, automotive, textiles, medical devices, and cosmetics [2]. - China is the world's largest producer and consumer of propylene, with a projected apparent consumption of 55.36 million tons and a market size of approximately 384.5 billion yuan in 2024. The industry has experienced rapid expansion, with an average annual growth rate of 12.8% from 2014 to 2024 [2][5]. - The propylene industry has over 100 production enterprises in China, with the top 10 companies accounting for 56.4% of total capacity. The market has been characterized by significant price volatility due to fluctuations in raw material prices and insufficient terminal demand [3][4]. Risk Management Needs - Prior to the launch of futures, the propylene industry lacked effective price risk management tools, leading to increased uncertainty for enterprises and hindering long-term healthy development [4][6]. - The introduction of propylene futures and options fills a critical gap in risk management, allowing companies to lock in procurement or sales prices and mitigate risks associated with market fluctuations [4][6]. Impact of Futures and Options - The dual design of "futures + options" provides flexible hedging tools for enterprises along the propylene supply chain, enhancing their ability to manage risks and stabilize operations [6][7]. - The listing of propylene futures is a crucial step in improving China's energy and chemical futures market, complementing existing products like crude oil and methanol, and facilitating better risk management strategies [6][7]. International Pricing Influence - The launch of propylene futures is seen as a proactive measure to address uncertainties in the international market and ensure the security of supply chains. It aims to enhance the international pricing influence of Chinese propylene, particularly as domestic companies expand into overseas markets [8][9]. - The futures market is expected to provide authoritative and transparent pricing, improving trade efficiency and meeting the diverse risk management needs of enterprises [8][9]. Future Prospects - The introduction of propylene futures and options is aligned with China's strategy for high-quality development in the chemical industry, facilitating resource allocation and supporting industry consolidation and technological upgrades [9][10]. - As more chemical derivatives are introduced, the risk management ecosystem within China's energy and chemical industries is expected to become more robust, providing strong support for the ongoing transformation and upgrading of the sector [9][10].
周期投资热情压抑已久私募聚焦结构性机会
Zhong Guo Zheng Quan Bao· 2025-07-23 21:00
周期板块估值处于低位 近期政策面、大工程"暖风"齐吹,一举点燃了A股周期板块压抑已久的热情。宝晓辉视其为"巨大的利 好":国家将综合整治"内卷式竞争"提升至战略高度,推动落后产能有序退出,这套组合拳直指优化供 需关系与提升商品价格,最终有望转化为企业业绩与市值的双重支撑。此外,经济基本面的背书同样有 力,稳中向好的经济复苏态势有望提振大宗商品需求。 章诗颖表示,A股周期板块近期的强势反弹,既源于供给侧改革预期升温,更得益于"相关板块整体估 值处于历史低位,机构持有筹码较少"的情况。 前述上海中型私募基金经理从资金博弈角度认同这一观点:上半年新消费、创新药、红利等板块的行情 已充分演绎,机构"配置纠偏"初步完成。而上游资源、新能源、地产等长期被冷落的领域,在"反内 卷、优供给及大型水电工程"等催化剂作用下,极易产生"升温效应"。 ● 本报记者 王辉 上周以来,国内商品期货市场多个工业品价格急速拉升,基建、有色、钢铁、建材等板块在A股市场轮 番领涨。推动力来自政策端与消息面的双重刺激:工信部宣布将实施新一轮十大重点行业稳增长工作方 案,着力调结构、优供给、淘汰落后产能;同时,雅鲁藏布江下游水电工程开工仪式举行,点 ...
中石化第2,万华化学第15
DT新材料· 2025-07-23 16:01
Core Viewpoint - The article discusses the 2025 Global Top 50 Chemical Companies ranking, highlighting the changes in the chemical industry landscape and the performance of major companies in terms of sales revenue and growth rates [1][2]. Summary by Sections Global Ranking and Sales Performance - The entry threshold for this year's ranking is $8 billion, a decrease of nearly $400 million from last year. The total sales revenue of the top 50 companies is $1.014 trillion, down 0.07% year-on-year from 2023, indicating stabilization at the bottom of the chemical market in 2024 [2]. - The top four companies are BASF, Sinopec, Dow, and PetroChina, with sales revenues of approximately $70.612 billion, $58.131 billion, $43 billion, and $42.783 billion respectively, showing changes of -5.3%, +1.7%, -3.7%, and +6.4% compared to 2023 [2][9]. Chinese Companies in the Ranking - Eleven Chinese companies made the list, including notable names such as Formosa Plastics (11th, $30.343 billion), Syngenta (13th, $26.9 billion), and Rongsheng Petrochemical (14th, $26.398 billion) [3][9]. - Tongkun Holding Group experienced the fastest sales growth at 23.3%, with a production capacity of 10 million tons of crude oil processing rights and leading global capacity in polyester filament [4][9]. Company Strategies and Innovations - Dongfang Shenghong is diversifying its product offerings, with recent projects including an 800 tons/year polyolefin development and a successful launch of a 5,000 tons/year para-aramid project [5]. - Rongsheng Petrochemical is heavily investing in high-end chemical materials, with projects totaling 1.48 trillion yuan for a 10 million tons/year facility covering various chemical products [6]. - Wanhua Chemical focuses on specialized products, including MDI and TDI, and is actively recruiting talent for new material sectors [7][8]. Market Trends and Future Outlook - The article indicates a shift in the chemical landscape, with Japanese companies showing overall sales growth, suggesting a changing dynamic in North America, Europe, and Asia [2]. - Sinopec is focusing on filling market gaps with innovative products like high-performance polypropylene and battery separator materials [8].