Core Insights - The chlor-alkali industry is currently facing challenges such as weak demand and insufficient profitability, prompting companies to adjust product structures and innovate technologically to explore fine chemicals and new materials [1][3][6] Supply and Demand - In the first three quarters of this year, the chlor-alkali production capacity has seen fluctuations, with some chlor-alkali products operating below capacity due to continued weak demand for polyvinyl chloride (PVC) [1][3] - The market for caustic soda has been volatile, while the PVC market remains at low levels; however, exports of caustic soda have increased in both volume and price, while PVC exports have seen a rise in volume but a drop in price [1][3] Regional Challenges - The chlor-alkali industry in Shandong has experienced significant profit fluctuations due to the balance of caustic soda and chlorine prices, with increased caustic soda production not translating into higher demand from downstream industries [3][4] - In Henan, environmental pressures and insufficient bauxite supply have led to a decline in caustic soda prices, significantly impacting profitability [3][4] - Inner Mongolia's chlor-alkali enterprises are operating near loss margins due to weak downstream demand and limited market adjustment space [3] Strategic Recommendations - Experts suggest that the chlor-alkali industry must deepen regional collaboration and enhance cooperation in the fields of chlor-alkali and fluorosilicon new materials to achieve sustainable and high-quality development [3][4] - The industry should focus on optimizing product structures and capacity layouts while promoting technological innovation to ensure supply chain resilience and safety [4][5] - Companies are encouraged to prioritize the development of high-end polyolefins, engineering plastics, and other key new materials, selecting products with significant market potential and a solid industrial foundation [4][5] Industry Transformation - The Shandong chlor-alkali industry aims to transition from scale expansion to quality and efficiency improvement, emphasizing green and low-carbon practices [5] - Jiangsu's chemical industry plans to strengthen its advantages in fine chemicals and new materials, focusing on ten key areas including high-end polyolefins and electronic chemicals [5] - The industry is urged to suppress new chlor-alkali capacity and develop high-value-added industries, particularly in fine chemicals and fluorosilicon new materials, to shift away from the current profit model [5][6]

1. Report Industry Investment Rating There is no information regarding the report industry investment rating in the provided content. 2. Core Viewpoints of the Report - Macro: In September, China's economic data was gradually released, the US government continued to be in a "shutdown" state with key economic data missing, and Fed officials gradually signaled interest - rate cuts [4]. - Supply - demand: In the Jiangsu and Zhejiang regions, some plants are expected to enter maintenance, tightening market supply, and with the approaching demand procurement cycle, liquid caustic soda prices are expected to rise steadily. In Shandong, with the shipment of orders from other provinces and the decline in enterprise inventories, some enterprises may continue to raise prices. The low - concentration caustic soda market is expected to rise slightly, while the high - concentration caustic soda may be sold at lower prices [4]. - Overall logic: Recently, the spot price in Shandong has been relatively strong, but there is a certain expectation of production cuts in the alumina industry. Coupled with the improvement of enterprise profits due to the recovery of liquid chlorine prices, the caustic soda 2601 contract will continue to be under pressure and run weakly [4]. - Strategy advice: For the caustic soda 2601 contract, the upper reference pressure level is 2600 yuan/ton, and the lower support level is 2300 yuan/ton [4]. 3. Summary According to the Directory 3.1 Market Review - **Spot market**: From 2024/10 to 2025/10, data on the market prices of 32% ion - membrane caustic soda in Shandong, Jiangsu, and Zhejiang, the price difference between 50% and 32% caustic soda in Shandong, the price difference of 32% caustic soda between Shandong and Jiangsu, and Shandong and Zhejiang were presented. Also, data on the basis, the market prices of flake caustic soda (99%) in Shandong and the northwest, the market prices of 32% ion - membrane caustic soda and raw salt in Shandong, and the market prices of 32% ion - membrane caustic soda and liquid chlorine in Shandong were shown [9][12]. - **Futures market**: From 2024/10 to 2025/10, data on the futures closing prices of caustic soda, alumina, PVC, and soda ash, the number of caustic soda warehouse receipts were presented [15]. - **Weekly market review (20251010 - 20251016)**: The prices, price changes, and price change rates of products such as raw salt, liquid caustic soda, flake caustic soda, liquid chlorine, alumina, viscose staple fiber, and lithium hydroxide were provided. For example, the price of 32% ion - membrane caustic soda in Shandong increased from 815 yuan/ton to 830 yuan/ton, with a growth rate of 1.84%, and the price of liquid chlorine in Shandong increased from - 100 yuan/ton to 50 yuan/ton, with a growth rate of 150% [18]. 3.2 Market Analysis - **Supply side - Output and operating rate**: From 20251010 - 1016, the average capacity utilization rate of China's caustic soda sample enterprises with a capacity of 200,000 tons and above was 81.4%, a decrease of 2.6% compared to the previous period. Loads in the northwest, north, east, south, and northeast regions all declined [20]. - **Supply side - Enterprise maintenance situation**: Enterprises in various regions such as Henan, Shandong, Tianjin, and Liaoning have maintenance plans, with different maintenance times and durations [22]. - **Downstream demand**: In the alumina industry, due to high profits in the electrolytic aluminum industry and shrinking profits in the alumina industry, electrolytic aluminum plants have made small - scale purchases for replenishment, but the transaction price is still declining. The capacity utilization rate of the viscose staple fiber industry decreased by 1.02% week - on - week [26]. - **Inventory**: As of 20251016, the factory inventory of fixed liquid caustic soda sample enterprises with a capacity of 200,000 tons and above in China was 403,300 tons (wet tons), a decrease of 4.25% compared to the previous period and an increase of 13.83% compared to the same period last year. The inventory situation varied in different regions [29]. - **Liquid chlorine**: As of October 16, 2025, the average price of liquid chlorine in Shandong was - 86 yuan/ton, a week - on - week increase of 14.43%. The liquid chlorine market is expected to be stable with a downward trend in the near future. As of October 17, 2025, China's PVC capacity utilization rate was 76.69%, and it is expected to rise to 78.47% this week [33]. - **Chlor - alkali cost - profit**: From 20251010 - 20251016, the average weekly gross profit of Shandong chlor - alkali enterprises was 394 yuan/ton, a week - on - week increase of 15.54% [34].

Consumption - Post-holiday consumption has shown a slight decline, with retail and wholesale automobile sales significantly dropping compared to the previous week, indicating a temporary "vacuum" in market demand after pre-holiday promotions[6] - The wholesale price index for agricultural products increased by 0.4% month-on-month, while the price of Moutai liquor has significantly decreased, reflecting a broader trend of price adjustments in consumer goods[6] - Service consumption has returned to normal levels, with a notable decline in movie attendance and tourism prices, indicating the end of the holiday "pulse" effect[7] Investment - Infrastructure investment has seen a cumulative issuance of special bonds amounting to CNY 3.81 trillion as of October 18, with an additional CNY 133.88 billion issued in October, suggesting a supportive funding environment for infrastructure projects[17] - Real estate transactions in 30 cities have shown a seasonal rebound, with first-tier and third-tier cities experiencing a narrowing of year-on-year declines, while second-tier cities have turned positive[17] Trade and Export - Domestic export prices have decreased by 4.1% month-on-month, while import prices fell by 2.2%, indicating weak demand in non-mainline shipping routes[23] - The Shanghai and Ningbo export container price indices increased by 12.9% and 16.8% respectively, reflecting a recovery in demand for mainline shipping routes post-holiday[23] Production - Most production sectors have shown improvement post-holiday, with coal consumption in coastal provinces increasing, although steel production has seen a mixed performance with some declines in output[26] - The operating rate for asphalt has slightly increased, indicating a gradual recovery in construction activities following the holiday[17] Inventory and Prices - Coal inventories at ports have significantly decreased, while cement inventory ratios have slightly increased, reflecting varying demand across sectors[36] - Consumer prices have shown a slight overall increase, while industrial prices have generally declined, with the PPI for industrial products decreasing by 1.1% month-on-month[38] Liquidity - The central bank has conducted a net withdrawal of CNY 231.9 billion to maintain liquidity stability, with the dollar index declining by 27 basis points, indicating a stable overall liquidity environment[42]

Report Industry Investment Rating No relevant content provided. Core Views - PVC: Supply-demand pressure is high, and the fundamental supply-demand contradiction is difficult to ease. The futures and spot prices are both weakening. Supply is expected to increase as some maintenance enterprises resume production next week. The peak season shows no obvious improvement, and downstream product enterprises perform averagely. The export market is affected by India's anti-dumping tax, with a wait-and-see attitude. The cost side provides bottom support, and the market is expected to remain under pressure, with a bearish view on rebounds [3]. - Caustic Soda: The price of downstream alumina continues to decline, and the industry's profit is shrinking with increasing losses. Some enterprises have cut production passively, so the demand-side support for caustic soda is weak. In the medium to long term, there is demand support as alumina has many planned projects in Q1 next year, which may lead to concentrated stockpiling in Q4 this year. After the National Day, non-aluminum industries may have purchasing intentions due to low prices. However, in the short term, the supply of caustic soda is increasing, while downstream demand is average, so the market sentiment is weak, and the price lacks support. A bearish view is recommended for short-term trading, and the downstream replenishment rhythm needs to be monitored [4]. Summary by Directory Caustic Soda - **Price and Market Trends**: The macro environment has weakened, and the caustic soda market has been affected by factors such as high开工 rates, inventory changes, and alumina demand. The futures price has fluctuated, and the spot price has shown a downward trend in some periods [8]. - **Supply**: The national average weekly weighted开工 rate of sample enterprises decreased to 85.45% from 88.24% last week, and the caustic soda production decreased by 3.17% to 82.43 tons. Many enterprises have carried out maintenance or faced unexpected failures [27]. - **Demand**: The demand from the alumina industry is weak due to its poor profitability. However, new alumina projects are expected to drive demand growth in the future. Non-aluminum industries may increase purchases after the National Day [4]. - **Export**: The export volume decreased in August but the export profit increased in September [56]. Polyvinyl Chloride (PVC) - **Price and Market Trends**: The PVC futures price has been on a downward trend due to weak supply-demand drivers and a poor commodity market atmosphere. The spot price has also weakened [63]. - **Supply**: The overall开工 rate of PVC powder decreased to 75.14% this week, with significant decreases in both calcium carbide and ethylene methods. Many enterprises have carried out maintenance [85]. - **Demand**: The two major downstream industries, profiles and pipes, face great pressure, and the real estate industry continues to have a negative impact on demand. The downstream orders are lower than the average of the past five years, and the inventory is high [93]. - **Inventory**: The inventory has been increasing, and the total inventory is at the highest level in recent years [101]. - **Export**: The net export volume decreased in August. The import volume in August 2025 was 1.24 tons, and the export volume was 28.41 tons [113][119].

Group 1: Report Industry Investment Rating - The trend strength of caustic soda is -1, indicating a relatively bearish view [4] Group 2: Core View of the Report - The valuation of caustic soda is always suppressed by the expected alumina production cut, and future market trends depend on whether this expectation is confirmed or refuted. In the long - term, alumina production cuts will lead to negative feedback in the industrial chain [2] Group 3: Summary by Relevant Catalogs Fundamental Tracking - On October 20, 2025, the 01 - contract futures price of caustic soda was 2344, the price of the cheapest deliverable 32% caustic soda in Shandong was 800, the Shandong spot 32% caustic soda converted to the futures price was 2500, and the basis was 156 [1] Spot News - On October 17, the caustic soda market in Shandong showed mixed trends. In the eastern part, inventory declined and some prices rose slightly; in the western part, high - price sales were poor and prices continued to fall [1] Market Condition Analysis - In October, there were new maintenance plans in Shandong, Hebei and other regions, so the supply pressure of caustic soda was not large. On the demand side, alumina plants in Hebei made concentrated purchases. With the subsequent shipment of orders from other provinces, Shandong was expected to continue destocking, and a sharp decline in the short - term Shandong market was unlikely. The high - output and high - inventory pattern of the alumina industry compressed profits, and marginal production capacity supply might be affected in the future. Although there was a demand for 5.6 million tons of new production capacity in Guangxi from the end of this year to early next year, the low - profit situation would also lead to a decline in the inventory levels of other alumina plants. The expected impact of alumina production start - up and production cuts on caustic soda could basically offset each other. In winter, it was the off - season for chlor - alkali enterprise maintenance, and the supply - demand gap caused by inventory accumulation might be limited [2]

南华期货PVC周报 ——宏观预期扰动偏大，策略难落地 戴一帆（投资咨询资格证号：Z0015428 交易咨询业务资格：证监许可【2011】1290 2025年10月19 第一章 核心矛盾及策略建议 1.1 核心矛盾 当前影响PVC走势的核心矛盾有以下几点：1、近年孱弱的需求导致过高显性库存，以及巨大的仓单压力，导 致月差被持续的压制在无风险附近不得翻身。2、在整体持续过剩的背景下，虽然上游利润已经被压制的比较 低，但是由于企业性质或者物料平衡等问题，实质性的供应出清兑现十分缓慢。3、今年是近年PVC新增投产 的大年，在出口爆发力不足的基础上，国内需求无法消化如此体量的PVC增量，导致基本面持续恶化。目前 平衡表看，PVC在过年之前难以去库，且由于冬季低温担心管道冻结等原因，会导致上游的降负荷或者停车 意愿较低，产能出清兑现很难，预计供应收缩不明显，今年将以历史最高库存状态进入春节。 | 平衡表3 | | | | | | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- ...

烧碱：远月估值受压制 PVC：趋势偏弱 国泰君安期货研究所·陈嘉昕 投资咨询从业资格号：Z0020481 日期：2025年10月19日 Guotai Junan Futures all rights reserved, please do not reprint CONTENTS 观点综述 01 烧碱价格及价差 02 烧碱供应 03 烧碱需求 04 PVC价格及价差 05 PVC供需 06 Special report on Guotai Junan Futures 2 观点综述 1 烧碱观点：远月估值受压制 | 供应 | 中国20万吨及以上烧碱样本企业产能平均利用率为81.4%，较上周环比-2.6%。分区域来看，西北、华北、华东、华南、东北负荷均有下 | | --- | --- | | | 滑，其中西北-2.6%至89.2%；华北-1.5%至75.2%，华东-2.9%至80.7%，东北-22.7%至73.0%，其中山东-2.0%至83.1%。 | | 需求 | 氧化铝方面，由于高产量、高库存的格局，未来利润将被持续压缩。目前企业生产意愿较高，氧化铝开工产能保持较高水平，但区域性供 | | | 需错配的问题未 ...

1. Report Industry Investment Rating - No information provided 2. Core View of the Report - The PVC market shows a pattern of reduced supply this week due to autumn maintenance, but new production capacities are gradually ramping up, resulting in an overall ample supply The market has seen some improvement in trading volume, with social inventories reaching an inflection point but still at a high level Exports are facing policy uncertainties, and the overall supply - demand situation remains weak The PVC futures price is under pressure from high - level warehouse receipts [3] - The 32% caustic soda spot price shows mixed trends This week, the production has slightly decreased due to increased maintenance, while the demand from the alumina industry is stable, and the non - aluminum end's purchasing sentiment has improved There are uncertainties in the start - up of new alumina plants in Guangxi, and the cost support for caustic soda still exists [3] 3. Summary by Relevant Catalogs PVC Market Data - Futures price and basis: The closing price of the PVC main contract is 4,694 yuan/ton (+17), the East China basis is - 94 yuan/ton (-17), and the South China basis is - 34 yuan/ton (-17) [1] - Spot price: The East China calcium carbide - based PVC is quoted at 4,600 yuan/ton (+0), and the South China calcium carbide - based PVC is quoted at 4,660 yuan/ton (+0) [1] - Upstream production profit: The semi - coke price is 690 yuan/ton (+0), the calcium carbide price is 2,830 yuan/ton (+0), the calcium carbide profit is - 12 yuan/ton (+0), the gross profit of PVC calcium carbide - based production is - 622 yuan/ton (+153), the gross profit of PVC ethylene - based production is - 538 yuan/ton (+20), and the PVC export profit is 4.4 US dollars/ton (-2.4) [1] - Inventory and start - up: The in - plant PVC inventory is 38.4 million tons (+8.4), the social PVC inventory is 55.7 million tons (+1.9), the calcium carbide - based PVC start - up rate is 74.73% (-7.03%), the ethylene - based PVC start - up rate is 76.10% (-2.44%), and the overall PVC start - up rate is 75.14% (-5.66%) [1] - Downstream orders: The pre - sales volume of production enterprises is 58.3 million tons (-19.3) [1] Market Analysis - The PVC futures price may rebound with the macro - sentiment after a volatile decline The supply has decreased this week due to autumn maintenance, but new production capacities are gradually ramping up, resulting in an overall ample supply The social inventory has reached an inflection point but is still at a high level Exports are facing policy uncertainties, and the overall supply - demand situation remains weak The high - level futures warehouse receipts are putting pressure on the PVC futures price [3] Strategy - Unilateral: Wait and see - Inter - delivery spread: Go short on the V01 - 05 spread when it is high - Inter - commodity spread: No recommendation [4] Caustic Soda Market Data - Futures price and basis: The closing price of the SH main contract is 2,453 yuan/ton (+15), and the basis of 32% liquid caustic soda in Shandong is 141 yuan/ton (-15) [1] - Spot price: The price of 32% liquid caustic soda in Shandong is quoted at 830 yuan/ton (+0), and the price of 50% liquid caustic soda in Shandong is quoted at 1,290 yuan/ton (+0) [1] - Upstream production profit: The single - product profit of caustic soda in Shandong is 1,603 yuan/ton (+0), the comprehensive profit of chlor - alkali in Shandong (0.8 tons of liquid chlorine) is 939.5 yuan/ton (+39.2), the comprehensive profit of chlor - alkali in Shandong (1 ton of PVC) is 237.53 yuan/ton (+0.00), and the comprehensive profit of chlor - alkali in the Northwest (1 ton of PVC) is 1,241.75 yuan/ton (+0.00) [2] - Inventory and start - up: The liquid caustic soda factory inventory is 40.33 million tons (-1.79), the flake caustic soda factory inventory is 2.45 million tons (+0.34), and the caustic soda start - up rate is 81.40% (-2.90%) [2] - Downstream start - up: The alumina start - up rate is 86.32% (+0.14%), the printing and dyeing start - up rate in East China is 66.76% (+0.13%), and the viscose staple fiber start - up rate is 88.61% (-1.02%) [2] Market Analysis - The 32% caustic soda spot price shows mixed trends This week, the production has slightly decreased due to increased maintenance, while the demand from the alumina industry is stable, and the non - aluminum end's purchasing sentiment has improved There are uncertainties in the start - up of new alumina plants in Guangxi, and the cost support for caustic soda still exists [3] Strategy - Unilateral: Wait and see - Inter - delivery spread: Pay attention to the downstream purchasing and the start - up progress of alumina plants in Guangxi, and go long on the SH01 - 05 spread when it is low - Inter - commodity spread: No recommendation [5]

1. Investment Ratings No investment ratings for the industries are provided in the reports. 2. Core Views Methanol - The price may continue to fluctuate under the game of supply and demand. Focus on the stability of overseas device operation, the customs - clearance efficiency of sanctioned vessels, and actual arrival performance. Pay attention to the port destocking rhythm and the implementation effect of overseas gas - limiting expectations [1]. Polyolefins (LLDPE & PP) - The inventory pressure after the holiday is still significant. The supply pressure is prominent in the medium - and long - term, and the demand lacks highlights. The upside space of the 01 contract is limited [5]. Caustic Soda - There is demand support in the medium - and long - term, but it is weak in the short term. It was previously recommended to be bearish, and now the short positions can be temporarily closed as the market stabilizes [8]. PVC - The short - term disk may continue to be under pressure. Although the supply pressure has slightly eased and exports have recovered, the demand in the peak season is weak. Pay attention to cost support and downstream demand performance [8]. PX - The supply and demand are expected to be weak in the fourth quarter. It will mainly fluctuate at a low level in the short term. It is recommended to wait and see and look for short - selling opportunities on rebounds, and mainly conduct reverse spreads on the monthly spread [9]. PTA - The short - term drive is limited, and it will mainly fluctuate at a low level. It is recommended to wait and see TA, pay attention to the support around 4500, and conduct rolling reverse spreads on TA1 - 5 [9]. Ethylene Glycol - It is expected to accumulate inventory in October, and the supply - demand structure is weak in the far - month. It is recommended to short EG01 on rallies, hold the seller of the out - of - the - money call option EG2601 - C - 4350, and conduct reverse spreads on EG1 - 5 [9]. Short Fibers - The absolute price is still under pressure in the short term, but it is relatively strong compared to raw materials due to low inventory. It is recommended to have the same strategy as PTA for the unilateral position, and widen the processing margin at a low level [9]. Bottle Chips - It is likely to enter the seasonal inventory accumulation channel. PR follows the cost end, and the processing margin improves in the short term. It is recommended to have the same strategy as PTA for the unilateral position, and the main contract processing margin is expected to fluctuate between 350 - 500 yuan/ton [9]. Pure Benzene - The overall supply and demand in October are expected to be loose, and the price drive is weak. BZ2603 follows the fluctuations of styrene and oil prices [10]. Styrene - The supply - demand is expected to be loose, and the price is still under pressure in the short term. EB11 should be treated as a short - selling opportunity on rebounds [10]. 3. Summary by Catalog Methanol - **Price and Spread**: MA2601 and MA2605 prices rose slightly on October 16. The basis and regional spreads changed. The spot prices in some regions decreased [1]. - **Inventory**: The enterprise inventory increased by 6.33%, the port inventory decreased by 3.36%, and the social inventory decreased by 1.61% [1]. - **Upstream and Downstream Operating Rates**: The domestic upstream operating rate decreased by 1.86%, the overseas upstream operating rate increased by 5.33%. Some downstream operating rates changed, with the MTO device operating rate increasing by 4.63% [1]. Polyolefins (LLDPE & PP) - **Price and Spread**: L2601, PP2601 and other futures prices rose slightly. The basis and price differences between contracts changed [5]. - **Inventory**: PE and PP enterprise inventories increased significantly, and the trade - related inventory of PP also increased [5]. - **Upstream and Downstream Operating Rates**: The PE device operating rate decreased by 2.61%, and the PP device operating rate increased by 0.6% [5]. Caustic Soda and PVC - **Price and Spread**: The prices of caustic soda and PVC futures and spot changed slightly. The export profit of PVC increased [8]. - **Supply**: The caustic soda and PVC operating rates increased, but the external - purchase calcium - carbide PVC profit decreased [8]. - **Demand**: The downstream operating rates of caustic soda and PVC changed, with some decreasing [8]. - **Inventory**: The PVC upstream factory inventory and social inventory increased [8]. Polyester Industry Chain - **Downstream Product Prices and Cash Flows**: The prices of polyester products such as POY, FDY, and DTY changed, and the cash flows also changed [9]. - **PX - related Prices and Spreads**: The PX price and related spreads changed, with the PX basis decreasing significantly [9]. - **PTA - related Prices and Spreads**: The PTA price and basis changed, and the processing margin decreased [9]. - **MEG - related Prices and Spreads**: The MEG price and basis changed, and the inventory increased [9]. Pure Benzene - Styrene - **Upstream Prices and Spreads**: The prices of upstream products such as crude oil and pure benzene changed, and the spreads also changed [10]. - **Styrene - related Prices and Spreads**: The styrene price and related spreads changed, and the cash flow improved [10]. - **Inventory**: The pure benzene and styrene port inventories decreased [10]. - **Industry Operating Rates**: The operating rates of pure benzene, styrene, and their downstream industries changed, with some decreasing [10].

2025 年 10 月 17 日 陈嘉昕 投资咨询从业资格号：Z0020481 chenjiaxin2@gtht.com 【基本面跟踪】 烧碱基本面数据 01合约期货价格 山东最便宜可交割 现货32碱价格 山东现货32碱折盘面 基差 资料来源：隆众资讯，国泰君安期货 【现货消息】 截至 20251016，隆众资讯统计全国 20 万吨及以上固定液碱样本企业厂库库存 40.33 万吨(湿吨)，环比 下调 4.25%，同比上调 13.83%。 【市场状况分析】 10 月山东、河北等地区存在新增检修，烧碱供应压力不大。需求端，河北氧化铝厂集中采购烧碱，下 周随着省外订单的陆续发货，山东地区预期继续去库，短期山东市场现货偏强。从氧化铝行业看，氧化铝高 产量、高库存格局，使得利润被持续压缩，边际产能供应未来可能受利润影响。虽然广西地区年底到明年年 初存在 560 万吨新增产能的备货需求，后期氧化铝备货将带动国内 50 碱货源流转，但低利润的格局也会使 得其他氧化铝厂的备货水平下滑。考虑到未来可能减产装置耗碱量偏高，因此氧化铝投产预期和减产预期 对烧碱带来的影响基本上可以相抵消。而冬季本身是氯碱企业检修淡季，高开工情况下， ...