冠通期货-PVC 2025年四季报 新增产能投产与反内卷博弈 研究咨询部 苏妙达 时间：2025年9月29日 投资有风险，入市需谨慎，本公司具备期货交易咨询业务资格，请务必阅读最后一页免责声明。 分析师苏妙达：F03104403/Z0018167 投资有风险，入市需谨慎。 核心观点 1 ⚫ 成本端，电石价格受煤炭价格上涨及有序用电影响而上涨，电石整体供应过剩之下，对PVC价格有一定的支撑，但电石价格继续推涨PVC价格 的空间不大。"以碱补氯"下，以目前的现金流还未引发PVC装置的停产。目前PVC开工率升至历年同期偏高水平。10-11月，PVC将进入秋季 检修旺季，如内蒙君正、山东信发、河南联创等装置计划检修，不过8-9月刚投产的140万吨/年新增产能在四季度将完全释放产能，30万吨/ 年的嘉化能源或将在四季度投产，预计秋检难以抵消新增产能带来的增量。六部门联合发布建材行业稳增长工作方案，只是目前PVC产业还 未有实际政策落地，老装置也大多通过技改升级，当然反内卷与老旧装置淘汰，解决石化产能过剩问题仍是宏观政策，将影响后续行情，值 得重点关注。2025年1-8月份，房地产仍在调整阶段，投资、新开工、竣工面积同比 ...

中泰期货PVC烧碱产业链周报 PVC + NAOH + CL 2025年9月28日 | | | 上 | 周 | 本 | 周 | | 周环比 | 下 | 周 | 下下周 | 思 路 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | 总产量 | 46 . | 09 | 47 . | 96 | 1 . | 87 | 49 | 87 . | 50 74 . | 本周产量略微增加 产量比预期略高 。 ， 下周产量预计增加 前期检修装置开始 ， | | 量 产 （万吨） | 乙烯法 | 13 . | 23 | 14 . | 06 | 0 . | 83 | 14 | 55 . | 15 28 . | 恢复 。 | | | 电石法 | 32 . | 86 | 33 . | 90 | 1 . | 04 | 35 | 32 . | 35 46 . | | | | 进口量（周均） | 1 . | 50 | 1 . | 50 | 0 . | 00 | 1 . | 50 | 1 50 . 2 | 8月出口数据28 411 比前 ...

Report Summary 1. Report Industry Investment Rating No information provided in the report. 2. Core View of the Report - PVC开工率环比下降，下游开工率窄幅上升，但因下游消耗有限，社会库存持续增长且压力偏高 [3] - 电石价格上涨带动电石法成本环比上升，目前电石法、乙烯法工艺持续亏损 [3] - 短期暂无新增检修计划，受部分装置重启影响，本周PVC产能利用率预计环比上升；新产能投放在即，中长期加大行业供应压力 [3] - 临近国庆长假，国内部分下游已完成备货，PVC需求预计边际减弱；终端地产市场偏弱，持续拖累国内需求 [3] - 印度PVC反倾销政策预计即将落地，出口市场观望为主，社会库存压力偏高，后市难去化 [3] - 近期电石供需博弈，价格预计持稳整理；乙烯法成本预计变化不大；短期供需偏弱给V2601盘面压力，技术上关注4830附近支撑线支撑 [3] 3. Summary by Relevant Catalogs 3.1 Futures Market - 聚氯乙烯（PVC）收盘价为4919元/吨，环比上涨28元/吨；成交量为902670手，环比增加54062手；持仓量为1111748手，环比减少12387手 [3] - 期货前20名持仓中，买单量为864420手，环比增加19389手；卖单量为952064手，环比增加4665手；净买单量为 - 87644手，环比增加14724手 [3] 3.2 Spot Market - 华东地区乙烯法PVC价格为5000元/吨，环比下降10元/吨；电石法PVC价格为4746.92元/吨，环比下降38.85元/吨 [3] - 华南地区乙烯法PVC价格为4970元/吨，环比下降30元/吨；电石法PVC价格为4815元/吨，环比下降36.88元/吨 [3] - 中国PVC到岸价为700美元/吨，东南亚到岸价为650美元/吨，西北欧离岸价为710美元/吨，均无环比变化；基差为 - 179元/吨，环比下降28元/吨 [3] 3.3 Upstream Situation - 华中、华北、西北电石主流均价分别为2800元/吨、2768.33元/吨、2610元/吨，均无环比变化；内蒙液氯主流价为 - 350元/吨，无环比变化 [3] - VCM、EDC在CFR远东和CFR东南亚的中间价均无环比变化 [3] 3.4 Industry Situation - 聚氯乙烯（PVC）开工率为76.96%，环比下降2.98%；其中电石法开工率为76.89%，环比下降2.5%；乙烯法开工率为77.12%，环比下降4.19% [3] - 社会库存总计53.46万吨，环比增加0.3万吨；华东地区总计48.21万吨，环比增加0.38万吨；华南地区总计5.25万吨，环比减少0.08万吨 [3] 3.5 Downstream Situation - 国房景气指数为93.05，环比下降0.29；房屋新开工面积累计值为39801.01万平方米，环比增加4595.01万平方米；房地产施工面积累计值为643108.94万平方米，环比增加4377.94万平方米；房地产开发投资完成额累计值为31693.94亿元，环比增加3588.01亿元 [3] 3.6 Option Market - 20日历史波动率为9.49%，环比下降0.32%；40日历史波动率为11.22%，环比上升0.16% [3] - 平值看跌期权隐含波动率和平值看涨期权隐含波动率均为14.21%，环比上升0.55% [3] 3.7 Industry News - 9月13 - 19日，PVC产能利用率环比下降2.98%至76.96%；下游开工率环比上升1.69%至49.19%，其中管材开工率环比上升1.52%至39.13%，型材开工率环比上升0.21%至39.43% [3] - 截至9月18日，PVC社会库存在95.37万吨，环比上周上升2.03% [3] - 9月13 - 19日，电石法周度平均成本环比上升至5230元/吨，乙烯法周度平均成本上升至5631元/吨；电石法周度利润环比下降155元/吨至657元/吨，乙烯法周度利润环比上升20元/吨至 - 652元/吨 [3]

Group 1 - The company has approved changes to its business scope and amendments to its articles of association during the board meeting held on September 22, 2025 [1][21][22] - The company will submit the changes for registration and filing, with the final business scope subject to the registration content [1][5] - The board meeting was attended by all 13 directors, and the proposals were unanimously approved [21][23] Group 2 - The company has decided to waive its right of first refusal for a 25% stake in its subsidiary, Xinjiang Yihua Chemical Co., Ltd., which is being transferred within the same controlling entity [4][5] - This transfer does not constitute a related party transaction or a major asset restructuring as defined by regulations [4][5] - The waiver of the right of first refusal will not affect the company's ownership percentage in Xinjiang Yihua and will not have a significant impact on the company's financial status or operating results [16][4] Group 3 - The company has scheduled its seventh extraordinary general meeting for October 9, 2025, to discuss the approved proposals from the board meeting [33][34] - The meeting will be conducted in a hybrid format, combining on-site voting and online voting [36][34] - Shareholders must register by September 26, 2025, to participate in the meeting [37][42]

Investment Rating - The report maintains a recommendation for the chemical industry, indicating a positive outlook for the sector [6]. Core Viewpoints - The report highlights significant price increases in chloromethane and isooctyl acrylate, suggesting a focus on new materials with substantial market potential [1]. - It recommends attention to Jiangshan Co., which is expected to benefit from rising glyphosate prices and has promising developments in innovative drugs [5]. - The DVA market is noted for its vast potential, with Daon Co. making key advancements in DVA products [5]. Industry Performance - In the third week of September, the chemical sector (Shenwan) declined by 1.33%, slightly underperforming the Shanghai A-share index, which fell by 1.31% [2][13]. - The dynamic PE for the chemical sector stands at 22.54 times, above the average PE of 12.20 times since 2015 [2][13]. Sub-industry Trends - Among the 31 sub-industries, 8 experienced gains while 23 saw declines. The top five gaining sub-industries included civil explosives (+7.72%) and modified plastics (+7.67%), while the top five declining sub-industries included carbon black (-5.25%) and other chemical raw materials (-4.74%) [3][17]. Chemical Prices and Spreads - The report lists the top five products with the highest weekly price increases: liquid chlorine (+22.93%), monochloromethane (+19.44%), and isooctyl acrylate (+7.47%) [4][22]. - The report also details the top five products with the largest price spread increases, including aniline spread (+17.56%) and ethylene spread (+13.17%) [4][34]. Inventory Changes - Significant inventory changes were noted, with ethylene glycol increasing by 25.67% and polyester chips by 11.98%, while epoxy propane saw a decrease of 10.44% [5][52].

Group 1: Chemical Sector Performance - The chemical raw materials index decreased by 1.21%, while the chemical machinery index increased by 2.90% [1] - The pharmaceutical index fell by 1.36%, and the pesticide and fertilizer index dropped by 2.50% [1] - The oil processing index declined by 2.22%, the oil extraction index decreased by 3.17%, and the oil trading index fell by 1.46% [1] Group 2: Oil Prices - As of September 19, the WTI crude oil futures settled at $62.68 per barrel, down 0.02% from September 12 [1] - The Brent crude oil futures settled at $66.68 per barrel, down 0.46% from the previous Friday [1] Group 3: Petrochemical Product Price Changes - The top five petrochemical products with price increases were liquid chlorine (up 22.93%), isooctyl acrylate (up 7.47%), acrylic acid (up 5.04%), calcium carbide (up 4.94%), and MMA (up 4.51%) [1] - The top five petrochemical products with price decreases were vitamin E (down 10.00%), epichlorohydrin (down 6.44%), sulfuric acid (down 4.94%), p-nitrochlorobenzene (down 4.62%), and dichloromethane (down 3.64%) [1] Group 4: Capital Market Performance of Chemical Companies - The top five performing listed chemical companies were Kaimete Gas (up 28.62%), Hongda Explosive (up 22.93%), Sanwei Co. (up 22.53%), Zhongshi Technology (up 21.57%), and Jinghua New Materials (up 18.94%) [2] - The bottom five performing listed chemical companies were Runyang Technology (down 11.48%), Lafang Cosmetics (down 10.43%), Wankai New Materials (down 10.42%), Jiaao Environmental Protection (down 10.25%), and Shilong Industrial (down 9.41%) [2]

Report Summary 1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints - The PVC market shows a complex situation. In the short - term, there is a game between weak supply - demand and cost support. The V2601 daily K - line is concerned about the support near 4900 yuan/ton. - The PVC social inventory continues to increase, with high pressure. The terminal real - estate market is weak, dragging down domestic demand. The Indian anti - dumping policy on PVC is expected to be implemented soon, and the export market is in a wait - and - see state. - Currently, both calcium carbide and ethylene processes are in continuous losses. There are no planned new maintenance devices in the short term, and the PVC capacity utilization rate is expected to increase this week due to the restart of some devices. New capacity is about to be put into production, increasing the long - term supply pressure [3]. 3. Summary by Related Catalogs 3.1. Market Data - **Futures Market**: The closing price of PVC (V2601) is 4938 yuan/ton, down 12 yuan; the trading volume is 824910 hands, up 36539 hands; the net long position of the top 20 futures holders is - 104363 hands, down 2087 hands [3]. - **Spot Market**: In the East China region, the price of ethylene - based PVC is 5010 yuan/ton (unchanged), and the price of calcium carbide - based PVC is 4786.54 yuan/ton, up 10 yuan. In the South China region, the price of ethylene - based PVC is 5000 yuan/ton, up 50 yuan, and the price of calcium carbide - based PVC is 4851.25 yuan/ton, up 19.38 yuan. The CIF price of PVC in China is 700 dollars/ton (unchanged), and the CIF price in Southeast Asia is 650 dollars/ton (unchanged) [3]. - **Upstream Situation**: The mainstream average price of calcium carbide in the central, northern, and northwestern regions has increased. The mainstream price of liquid chlorine in Inner Mongolia remains unchanged at - 575 yuan/ton. The intermediate prices of VCM and EDC in the Far East and Southeast Asia remain unchanged [3]. - **Industrial Situation**: The weekly operating rate of PVC is 76.96%, down 2.98%. The social inventory of PVC is 53.46 tons, up 0.3 tons [3]. - **Downstream Situation**: The national real - estate climate index is 93.34, down 0.26. The cumulative values of new housing construction area, real - estate construction area, and real - estate development investment have all increased [3]. - **Option Market**: The 20 - day and 40 - day historical volatilities of PVC have decreased. The implied volatilities of at - the - money put and call options have increased slightly [3]. 3.2. Industry News - From September 13th to 19th, the PVC capacity utilization rate decreased by 2.98% to 76.96%, and the downstream operating rate increased by 1.69% to 49.19%. Among them, the operating rate of pipes increased by 1.52% to 39.13%, and the operating rate of profiles increased by 0.21% to 39.43% [3]. - As of September 18th, the PVC social inventory was 95.37 tons, up 2.03% from the previous week. The weekly average cost of calcium carbide - based PVC increased to 5230 yuan/ton, and the weekly average cost of ethylene - based PVC increased to 5631 yuan/ton. The weekly profit of calcium carbide - based PVC decreased by 155 yuan/ton to 657 yuan/ton, and the weekly profit of ethylene - based PVC increased by 20 yuan/ton to - 652 yuan/ton [3].

Report Industry Investment Rating - Not provided in the document Core Viewpoints - The fundamentals show that the comprehensive profit of enterprises has declined, the valuation pressure has decreased, the maintenance volume is low, and the production is at a historical high. In the short term, multiple new devices will be tested. On the downstream side, domestic operations have improved. Regarding exports, the anti - dumping tax rate in India has been determined, and exports are expected to weaken after implementation. The cost of calcium carbide has continued to rebound, while caustic soda has declined, leading to stronger overall valuation support. In the medium term, the industry is continuously suppressed by the significant increase in production capacity and the continuous decline in real - estate demand, and the industry pattern has deteriorated. It is necessary to rely on export growth or the implementation of policies to clear old devices to consume the excess domestic production capacity. Overall, given the current situation of strong supply and weak demand in China, with the weakening export outlook, even if the downstream has improved recently, it is still difficult to change the pattern of oversupply. The fundamentals are poor. In the short term, there will be a small rebound due to stronger valuation support, improved domestic demand, and a better commodity atmosphere. In the medium term, pay attention to short - selling opportunities on rallies [11] Summary by Directory 1. Weekly Assessment and Strategy Recommendation - **Cost and Profit**: The price of Wuhai calcium carbide is reported at 2,600 yuan/ton, a week - on - week increase of 200 yuan/ton; the price of Shandong calcium carbide is reported at 2,840 yuan/ton, a week - on - week increase of 60 yuan/ton; the price of medium - grade semi - coke in Shaanxi is 680 yuan/ton, a week - on - week increase of 20 yuan/ton. In terms of profit, the comprehensive profit of chlor - alkali integration has decreased, while the profit of ethylene - based production has increased slightly. Currently, the valuation support is neutral [11] - **Supply**: The PVC capacity utilization rate is 77%, a month - on - month decrease of 3%. Among them, the utilization rate of calcium carbide - based production is 76.9%, a month - on - month decrease of 2.5%; the utilization rate of ethylene - based production is 77.1%, a month - on - month decrease of 4.2%. Last week, the supply - side load decreased mainly due to the reduced loads of enterprises such as Shaanxi Beiyuan, Gansu Jinchuan, Zhongtai, Henan Yuhang, and Haohua. The load is expected to pick up slightly next week. The overall maintenance volume in September is expected to decline, and multiple devices are expected to be commissioned and put into production, further increasing the supply pressure [11] - **Demand**: Regarding exports, the final anti - dumping tax rate ruling result in India has been announced, and China's tax rate is at a significant disadvantage compared to other countries. Exports are expected to decline after implementation. The operations of the three major downstream industries continued to improve last week. The load of the pipe industry is 39.1%, a month - on - month increase of 1.5%; the load of the film industry is 76.9%, remaining flat month - on - month; the load of the profile industry is 39.4%, a month - on - month increase of 0.2%. The overall downstream load is 49.2%, a month - on - month increase of 1.7%. The overall downstream operations have stabilized and improved. Last week, the pre - sales volume of PVC was 756,000 tons, a week - on - week increase of 67,000 tons [11] - **Inventory**: Last week, the in - factory inventory was 306,000 tons, a week - on - week decrease of 4,000 tons; the social inventory was 954,000 tons, a week - on - week increase of 19,000 tons; the overall inventory was 1.26 million tons, a week - on - week increase of 16,000 tons; the number of warehouse receipts continued to rise. Currently, it is still in the inventory accumulation cycle, and the upstream inventory is gradually transferred to the mid - stream. Under the pattern of strong supply and weak demand, the inventory accumulation is expected to continue [11] 2. Futures and Spot Market - The basis and price spread in the futures and spot market are fluctuating weakly, but specific data and analysis details are not provided in the text, only relevant charts are mentioned [16] 3. Profit and Inventory - **Profit**: The profit of chlor - alkali integration has declined, and the valuation is neutral. The text also provides charts showing the profit trends of Shandong's externally - purchased calcium carbide chlor - alkali integration, PVC calcium carbide - based production, PVC ethylene - based production, and Inner Mongolia's calcium carbide production [40] - **Inventory**: The text provides charts showing the inventory trends of PVC in - factory inventory, ethylene - based in - factory inventory, calcium carbide - based in - factory inventory, social inventory, the sum of factory and social inventory, and warehouse receipts [34][37][39] 4. Cost Side - **Calcium Carbide**: Calcium carbide prices have continued to rebound. The price of Wuhai calcium carbide and Shandong calcium carbide has increased week - on - week. The text also provides charts showing the price trends of Wuhai and Shandong calcium carbide, calcium carbide inventory, and calcium carbide operating rate [47][49] - **Other Raw Materials**: Semi - coke prices have risen, while caustic soda prices have fallen. The text provides charts showing the price trends of semi - coke in Shaanxi, 32% liquid caustic soda in Shandong, liquid chlorine in Shandong, and Northeast Asian ethylene CFR spot prices [52][53] 5. Supply Side - In 2025, the production capacity of PVC will be significantly increased, mainly concentrated in the third quarter. Multiple enterprises such as Xinpu Chemical, Jintai Chemical, and Wanhua Chemical (Phase II) will put new production capacity into operation. The total planned new production capacity in 2025 is 2.5 million tons/year [61][66] 6. Demand Side - The operating loads of the three major downstream industries of PVC have continued to improve. The operating rates of pipes, films, and profiles have either increased or remained stable. The pre - sales volume of PVC has also increased. However, regarding exports, due to the anti - dumping tax rate ruling in India, exports are expected to decline [78][11]

Report Summary 1. Investment Rating - The provided content does not mention the industry investment rating. 2. Core View - The PVC market shows mixed trends. Supply - side: this week, the impact of shutdowns at Beiyuan and Jinchuan expands, and new maintenance at Ningxia Yinglite and Haohua is added, likely causing a significant drop in capacity utilization. In the long - term, 900,000 tons of new installations from Bohua, Gansu Yaowang, and Qingdao Gulf are planned to be put into production in September, increasing supply pressure. Demand - side: due to pre - holiday stocking in China, the operating rate of some product enterprises has increased recently. However, the weak real - estate market continues to drag down domestic demand, and the upcoming anti - dumping policy in India has led to a wait - and - see attitude in the export market. Also, high caustic soda profits weaken the cost support of calcium carbide and ethylene. With the upcoming favorable policies for key industries, industrial products rose on the day. Technically, the daily K - line of V2601 should pay attention to the pressure around 4975 yuan/ton [3]. 3. Directory Summaries 3.1 Futures Market - The closing price of PVC futures is 4921 yuan/ton, up 45 yuan/ton; trading volume is 990,616 hands, up 346,696 hands; open interest is 1,200,474 hands, down 35,157 hands. The net long position of the top 20 futures holders is - 130,878 hands, up 19,831 hands [3]. 3.2 Spot Market - In the East China region, the price of ethylene - based PVC is 4995 yuan/ton, unchanged; the price of calcium - carbide - based PVC is 4701.54 yuan/ton, unchanged. In the South China region, the price of ethylene - based PVC is 4920 yuan/ton, unchanged; the price of calcium - carbide - based PVC is 4793.75 yuan/ton, up 3.12 yuan/ton. The CIF price of PVC in China is 700 dollars/ton, unchanged; the CIF price in Southeast Asia is 650 dollars/ton, unchanged; the FOB price in Northwest Europe is 690 dollars/ton, unchanged. The basis of PVC is - 211 yuan/ton, down 15 yuan/ton [3]. 3.3 Upstream Situation - The mainstream average price of calcium carbide in Central China is 2700 yuan/ton, up 50 yuan/ton; in North China, it is 2640 yuan/ton, unchanged; in Northwest China, it is 2438 yuan/ton, unchanged. The mainstream price of liquid chlorine in Inner Mongolia is - 575 yuan/ton, unchanged. The mid - price of VCM CFR in the Far East is 509 dollars/ton, up 6 dollars/ton; in Southeast Asia, it is 546 dollars/ton, up 7 dollars/ton. The mid - price of EDC CFR in the Far East is 189 dollars/ton, unchanged; in Southeast Asia, it is 201 dollars/ton, unchanged [3]. 3.4 Industry Situation - The weekly operating rate of PVC is 79.94%, up 2.81 percentage points; the operating rate of ethylene - based PVC is 81.31%, up 3.17 percentage points; the operating rate of calcium - carbide - based PVC is not clearly presented in a comparable way in the table. The total social inventory of PVC is 79.39 million tons, down 0.14 million tons [3]. 3.5 Downstream Situation - The social inventory of PVC in the East China region is 47.83 million tons, up 0.02 million tons; in the South China region, it is 5.33 million tons, down 0.16 million tons. The national real - estate climate index is 93.34, down 0.26. The cumulative value of new housing construction area is 352.06 million square meters, up 48.4168 million square meters; the cumulative value of real - estate construction area is 6.38731 billion square meters, up 54.0957 million square meters; the cumulative value of real - estate development investment is 2810.593 billion yuan, up 363.043 billion yuan [3]. 3.6 Option Market - The 20 - day historical volatility of PVC is 8.81%, down 0.07 percentage points; the 40 - day historical volatility is 20.28%, down 0.01 percentage points. The implied volatility of at - the - money put options is 14.98%, down 0.06 percentage points; the implied volatility of at - the - money call options is 14.98%, down 0.05 percentage points [3]. 3.7 Industry News - On September 15th, the spot price of East China PVCSG5 rose by 20 - 60 yuan/ton compared to last Friday, ranging from 4620 - 4800 yuan/ton. From September 6th to 12th, China's PVC capacity utilization was 79.94%, up 2.81% from the previous period. As of September 11th, the PVC social inventory increased by 1.75% to 934,200 tons. Last week, the downstream operating rate of PVC increased by 4% to 47.5%, with the pipe operating rate up 4.13% to 37.61% and the profile operating rate up 0.83% to 39.22% [3].

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - For the PVC industry, this week's production volume slightly increased, but the actual volume was less than expected. Next week, production is expected to decrease due to more device overhauls. The apparent demand this week was higher than expected, and it is expected to remain stable next week. The inventory showed a mixed trend, with the old - sample inventory decreasing and the new - sample inventory increasing. The overall comprehensive profit of the chlor - alkali industry was in a relatively strong state but is expected to weaken later. The upstream is mainly focused on stable production, the downstream demand is weak, and the export order volume improved slightly this week [6][9][11]. - For the caustic soda industry, this week's production volume decreased slightly, but it remained at a high level and is expected to continue to increase. The apparent demand was in line with expectations and is expected to remain stable next week. The national inventory decreased slightly and may continue to decline. The comprehensive profit of the chlor - alkali industry in Shandong showed a mixed trend, with the profit of external - sales liquid - chlorine devices improving and the comprehensive profit of PVC - supporting enterprises weakening [112][115]. 3. Summary by Relevant Catalogs 3.1 PVC Market 3.1.1 Production - This week's total PVC production was 47.88 million tons, a week - on - week increase of 1.69 million tons. The ethylene - based production was 13.95 million tons, an increase of 0.55 million tons, and the calcium - carbide - based production was 33.93 million tons, an increase of 1.14 million tons. Next week, the total production is expected to be 44.87 million tons, mainly due to more device overhauls [6]. 3.1.2 Import and Export - The weekly average import volume remained stable at 1.50 million tons, and the weekly average export volume was 5.75 million tons. The export order volume increased slightly this week, and the export volume in July was 33.06 million tons, 10% higher than the previous forecast [6]. 3.1.3 Apparent Demand - This week's apparent demand was 44.35 million tons, higher than the expected 42.53 million tons. The expected apparent demand for next week is 42.53 million tons. The domestic apparent demand growth rate in September is expected to be - 2%, but the actual growth rate may be lower [6]. 3.1.4 Inventory - The total inventory this week was 84.16 million tons, a decrease of 0.72 million tons from last week. The old - sample inventory decreased by 0.72 million tons, while the new - sample inventory of middle - stream traders increased by 1.62 million tons, higher than the old - sample increase of 1.76 million tons. The actual total inventory still increased [6][9]. 3.1.5 Price and Basis - The spot price of PVC showed a weakening trend. The basis of PVC showed a strengthening trend, and the inter - month spread was volatile [11][24][25]. 3.1.6 Profit - The production profit of calcium carbide in Shaanxi remained stable at - 492 yuan/ton, while the production profit of calcium carbide in Inner Mongolia increased from - 40 yuan/ton to 10 yuan/ton. The comprehensive profit of chlor - alkali slightly expanded, but it is expected to weaken later. The profit of various production methods of PVC showed different trends, with some decreasing and some increasing [11]. 3.2 Caustic Soda Market 3.2.1 Production - This week's total caustic soda production was 82.11 million tons, a week - on - week decrease of 0.85 million tons. Next week, the production is expected to be 82.54 million tons and continue to increase [112]. 3.2.2 Import and Export - The weekly average import volume was 0.02 million tons, and the weekly average export volume was 6.52 million tons. The export volume in July was 29.1 million tons, and the export volume is estimated to be around 653,000 tons based on previous years' data [112]. 3.2.3 Apparent Demand - This week's apparent demand was around 77.09 million tons, and next week it is expected to be around 77.53 million tons based on previous years' data [112]. 3.2.4 Inventory - The total inventory (in 100% equivalent) this week was 20.05 million tons, a decrease of 1.48 million tons from last week. The liquid - caustic soda inventory in Shandong decreased by 3.10 million tons, and the flake - caustic soda inventory and the inventory of large alumina plants showed little change [112]. 3.2.5 Price and Basis - The spot price of caustic soda remained stable. The basis of caustic soda showed a strengthening trend, and the inter - month spread was volatile. It is recommended to pay attention to the reverse - arbitrage opportunity for the 1 - 5 spread [115][126][127]. 3.2.6 Profit - The comprehensive profit of chlor - alkali in Shandong showed a mixed trend. The profit of external - sales liquid - chlorine devices improved, and the comprehensive profit of PVC - supporting enterprises weakened. The cost of caustic soda in Shandong remained stable [115].