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铜产业链周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:26
铜产业链周度报告 国泰君安期货研究所·季先飞·首席分析师/有色及贵金属 组联席行政负责人 投资咨询从业资格号:Z0012691 日期:2025年09月28日 Special report on Guotai Junan Futures 1 Guotai Junan Futures all rights reserved, please do not reprint 铜:原料供应扰动增强,具备长期多配价值 资料来源: SMM,同花顺iFinD,国泰君安期货研究 2 资料来源 SMM ,iFinD同花顺 国泰君安期货研究 : ◆ 铜矿供应扰动增强,铜价快速上涨。自由港就先前报告的印尼Grasberg Block Cave矿泥石流事件状况提供最新信息,主要包含以下几个 方面:(1)如先前报告,为优先进行搜救,Grasberg矿区的采矿作业自9月8日起已暂停;(2)PTFI已开始调查事件起因,预计调查将 在2025年底前完成;(3)维修工作可能导致2025年第四季度和2026年的生产出现重大推迟,预计在2027年恢复至事件前的运营水平; (4)PTFI在2026年的产量可能较事件前预估低约35%;(5)受事件影响,P ...
金银周报-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:26
金银周报 国泰君安期货研究所 有色及贵金属 数据 | | 本周收盘价 | 周涨幅 | 昨日夜盘收盘价 | 夜盘涨幅 | | --- | --- | --- | --- | --- | | 沪银2512 | 10,632 | 6.63% | 4380 | -1.68% | | 白银T+D | 10,551 | 6.15% | 4351 | -1.98% | | Comex白银2512 | 46.365 | 6.92% | - | - | | 伦敦银现货 沪金2512 | 46.032 856.06 | 6.90% 3.07% | - 388.30 | - -0.49% | | 黄金T+D Comex黄金2512 | 852.90 3,789.8 | 3.26% 1.89% | 386.86 - | -0.64% - | | 伦敦金现货 | 3,758.8 | 2.01% | - | - | | 【期货成交及持仓变动】 | | | | | | 单位:手 | 本周成交 | 较前周变动 | 本周持仓 | 较前周变动 | | 沪银2512 | 802,586 | 333367 | 544,232 | 110250 | ...
铸造铝合金产业链周报-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:26
铸造铝合金产业链周报 国泰君安期货研究所 有色及贵金属组 王蓉(首席分析师/所长助理) 投资咨询从业资格号:Z0002529 强弱分析:中性 精废价差趋势性回落 0 1000 2000 3000 4000 5000 6000 01-02 01-14 01-26 02-07 02-19 03-03 03-15 03-27 04-09 04-21 05-06 05-18 05-30 06-11 06-23 07-05 07-17 07-29 08-10 08-22 09-03 09-15 09-27 10-16 10-28 11-09 11-21 12-03 12-15 12-27 元/吨 佛山破碎生铝精废价差 2021 2022 2023 2024 2025 ADC12-A00收敛明显 -2000 -1500 -1000 -500 0 500 1000 1500 01-02 01-14 01-26 02-07 02-19 03-03 03-15 03-27 04-09 04-21 05-06 05-18 05-30 06-11 06-23 07-05 07-17 07-29 08-10 08-22 09-03 ...
国债期货周报-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:23
Report Summary 1. Report Industry Investment Rating No relevant content provided. 2. Core View of the Report - The report maintains the view that the medium - term general direction of the treasury bond futures market is oscillating with a bearish bias [4]. 3. Summary by Directory 3.1. Weekly Focus and Market Tracking - Treasury bond futures contracts have been in a continuous weekly correction, with the ultra - long - end performing weakly. Before the National Day holiday, some profit - taking sales led to a decrease in the stock market's risk appetite and a rebound in the bond market [4][5]. - The treasury bond futures market showed an oscillating and relatively strong trend this week. Policy coordination and liquidity expectations dominated market sentiment. Long - term varieties were more active but their prices were under pressure, while short - term varieties were relatively stable [5]. - The central bank restarted the 14 - day reverse repurchase operation and adjusted its tender method, releasing a signal of liquidity support. However, the policy coordination effect weakened the supply shock. The new regulations on public fund sales increased the short - bond redemption pressure, and there were differences in the market's expectations for additional loose - money policies. Combined with the "stock - bond seesaw" effect, the bond market was under short - term pressure [5]. - The risk appetite has significantly decreased in recent trading days, but the bond market has not improved. In terms of the net long - position changes, private funds slightly reduced their positions, while wealth management subsidiaries and foreign capital slightly increased their positions, showing a divergence between speculative and allocation funds [5]. - Based on the initial information of the September EPMI, the macro - economic monthly环比 situation has warmed up, but the overall growth performance in the third quarter was relatively weak. There is still room for policy deployment, and inflation环比 has marginally improved. Policies to guide long - term funds into the market are in the ascendant [5]. - The treasury bond futures market shows a differentiated feature of short - term stability and intensified long - term fluctuations, with a significant change in the yield curve shape. The trading volume of the 30 - year treasury bond futures has significantly increased, indicating increased long - term selling pressure and intensified long - short game [9]. 3.2. Liquidity Monitoring and Curve Tracking No specific content provided other than the title and source information [12][13]. 3.3. Seat Analysis - In terms of the daily changes in the net long - position of different institutional types: private funds decreased by 6.67%, foreign capital decreased by 0.51%, and wealth management subsidiaries decreased by 1.51%. In terms of weekly changes: private funds decreased by 5.46%, foreign capital increased by 14.04%, and wealth management subsidiaries increased by 13.74% [14].
能源化工胶版印刷纸周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:21
Special report on Guotai Junan Futures 2 行业资讯 1 国泰君安期货·能源化工 胶版印刷纸周度报告 国泰君安期货研究所·石忆宁 投资咨询从业资格号:Z0022533 日期:2025年9月28日 Guotai Junan Futures all rights reserved, please do not reprint CONTENTS 行业资讯 01 行情走势 02 供需数据 03 行情研判 04 行业资讯 现货价格 成本利润 季节性特征 供给 需求 库存 进出口 行情研判 行业资讯 1.【国内双胶纸周度企业库存分析】据卓创资讯数据监测统计,本周四双胶纸库存天数较上周四上升1.26%,本周增幅环比扩大0.25个百分 点。行业整体开工水平回升,货源供应量增加,但市场需求跟进有限,纸厂库存进一步累积。 2.【国内双胶纸周度企业开工负荷分析】据卓创资讯数据统计,本周双胶纸开工负荷率在51.54%,环比上升0.76个百分点,本周增幅环比扩 大0.10个百分点。周内山东个别产线开工回升,其余规模纸厂开工水平变化不大,行业开工负荷率小幅提升。 资料来源: 卓创资讯,国泰君安期货研 ...
能源化工燃料油、低硫燃料油周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:21
1. Report Industry Investment Rating - No information provided in the document. 2. Core Views of the Report - This week, fuel oil prices rose significantly, with the price center gradually reaching a two - month high. For high - sulfur fuel oil, market transactions improved slightly, the premium increased, Middle East shipments remained high, but Russian exports continued to decline. Due to recent attacks and sanctions, nearly one - third of Russian refinery capacity was offline, so supply factors still supported high - sulfur fuel oil. If Russian exports continue to face obstacles, high - sulfur fuel oil valuations may continue to rise. For low - sulfur fuel oil, there is no obvious supply gap in the Asia - Pacific region, and spot shipments are normal. The August Singapore bunker sales data was good, providing some support on the demand side. On the domestic market, the quota issue has been fully priced in by the market, but inventory continued to accumulate in the Zhoushan area, and there were still warehouse receipts on the futures market. In the short term, the price may be relatively weaker than that of high - sulfur fuel oil. - Valuation: FU is estimated to be in the range of 2700 - 3000, and LU is estimated to be in the range of 3400 - 3650. - Strategies: 1) Unilateral: FU will continue to be strong in the short term, and LU will mainly follow the upward trend. 2) Inter - period: FU and LU will maintain the current structure. 3) Inter - variety: FU cracking will fluctuate at a high level; the LU - FU spread may still contract slightly in the short term. [4] 3. Summary by Relevant Catalogs 3.1 Supply - **Refinery Operations**: The document presents the capacity utilization rates of Chinese refineries (crude oil: atmospheric and vacuum distillation), independent refineries, and major refineries over different years and time periods, but no specific analysis is provided. [6] - **Global Refinery Maintenance**: It shows the maintenance volumes of global CDU devices, hydrocracking devices, FCC devices, and coking devices over different years and time periods, but no specific analysis is provided. [9][11][13][14] - **Domestic Refinery Fuel Oil Production and Commodity Volume**: It shows the monthly production of fuel oil in China, the monthly production of low - sulfur fuel oil in Chinese refineries, and the monthly domestic commercial volume of fuel oil over different years, but no specific analysis is provided. [20] 3.2 Demand - **Domestic and Foreign Fuel Oil Demand Data**: It shows the monthly actual consumption of marine fuel oil in China, the monthly sales volume of fuel oil bunkering in Singapore, and the monthly apparent consumption of fuel oil in China over different years, but no specific analysis is provided. [23] 3.3 Inventory - **Global Fuel Oil Spot Inventory**: It shows the heavy oil inventory in Singapore, the fuel oil inventory in European ARA, the heavy distillate inventory in Fujairah, and the residual fuel oil inventory in the US over different years and time periods, but no specific analysis is provided. [26][28][29] 3.4 Price and Spread - **Asia - Pacific Regional Spot FOB Prices**: It shows the FOB prices of 3.5% fuel oil in Fujairah, 0.5% fuel oil in Fujairah, 3.5% fuel oil in Singapore, 3.5% fuel oil in the Mediterranean, 1% fuel oil in north - western Europe, and 1% fuel oil in the Mediterranean over different years and time periods, but no specific analysis is provided. [34][35][36][38][39][41] - **European Regional Spot FOB Prices**: It shows the FOB prices of 3.5% fuel oil in north - western Europe, 3.5% fuel oil in the US Gulf, high - sulfur fuel oil cargo prices in the New York Harbor, 0.5% fuel oil in the US Gulf, and low - sulfur straight - run fuel oil prices in the USAC over different years and time periods, but no specific analysis is provided. [43][44] - **US Regional Fuel Oil Spot Prices**: It shows the FOB prices of 3.5% fuel oil in the US Gulf, high - sulfur fuel oil cargo prices in the New York Harbor, 0.5% fuel oil in the US Gulf, and low - sulfur straight - run fuel oil prices in the USAC over different years and time periods, but no specific analysis is provided. [44] - **Paper and Derivative Prices**: It shows the prices of high - sulfur and low - sulfur swaps in north - western Europe, Singapore low - sulfur fuel oil swaps, Singapore 380 bunker swaps, and domestic futures contracts (FU and LU) over different time periods, but no specific analysis is provided. [47][48][51] - **Fuel Oil Spot Spreads**: It shows the Singapore high - low sulfur spread, Singapore viscosity spread, and other spreads over different years and time periods, but no specific analysis is provided. [57][58][59] - **Global Fuel Oil Cracking Spreads**: It shows the cracking spreads of high - sulfur and low - sulfur fuel oil in Singapore and north - western Europe over different years and time periods, but no specific analysis is provided. [62][63][64] - **Global Fuel Oil Paper Monthly Spreads**: It shows the monthly spreads of high - sulfur and low - sulfur fuel oil in Singapore and north - western Europe over different years and time periods, but no specific analysis is provided. [66] 3.5 Import and Export - **Domestic Fuel Oil Import and Export Data**: It shows the monthly import and export volumes of fuel oil (excluding biodiesel) in China over different years, but no specific analysis is provided. [71][73] - **Global High - Sulfur Fuel Oil Import and Export Data**: It shows the weekly changes in global high - sulfur fuel oil import and export volumes in different regions, but no specific analysis is provided. [75] - **Global Low - Sulfur Fuel Oil Import and Export Data**: It shows the weekly changes in global low - sulfur fuel oil import and export volumes in different regions, but no specific analysis is provided. [77] 3.6 Futures Market Indicators and Internal - External Spreads - **Review**: This week, Asia - Pacific fuel oil prices rose significantly, and the Zhoushan market moved in tandem. In terms of spreads, domestic FU and LU were relatively stronger than the international market, and the premium continued to recover. - **Logic**: This week, spot prices at home and abroad rebounded significantly. On the domestic market, FU started to rebound from the bottom, and the internal - external spread continued to repair. The same situation occurred for LU. Due to the relatively small new batch of quotas, the domestic LU maintained a stable spread with the international spot market. [80] - **Internal - External Spreads**: It shows the internal - external spreads of 380 spot, 0.5% spot, and domestic futures contracts (FU and LU) against Singapore over different dates, but no specific analysis is provided. [81] 3.7 FU and LU Position and Volume Changes - It shows the trading volumes and open interest of fuel oil main - continuous contracts, fuel oil continuous contracts, low - sulfur fuel oil continuous contracts, and related sub - contracts over different years and time periods, but no specific analysis is provided. [94][96][99] 3.8 FU and LU Warehouse Receipt Quantity Changes - It shows the changes in the number of FU and LU warehouse receipts over different years and time periods, but no specific analysis is provided. [105][106]
国泰君安期货原油周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:13
国泰君安期货·原油周度报告 国泰君安期货研究所 黄柳楠 投资咨询从业资格号:Z0015892 赵旭意 投资咨询从业资格号:Z0020751 日期:2025年9月28日 GuotaiJunanFuturesallrightsreserved,pleasedonotreprint | 01 | CONTENTS 02 | 03 | 04 | 05 | 06 | | --- | --- | --- | --- | --- | --- | | 综述 | 宏观 | 供应 | 需求 | 库存 | 价格及价差 | | 原油:单边观望,轻仓过节 | 利率、贵金属与油价走势比较 | OPEC+核心成员国出口量一览 | 欧美炼厂开工率 | 美欧各类油品库存 | 基差 | | | 海外服务业数据 | 非OPEC+核心成员国出口量一览 | 中国炼厂开工率 | 亚太各类油品库存 | 月差 | | | 中国信用数据 | 美国页岩油产量 | | | 内外盘原油价差 | | | | | | | 净持仓变化 | SpecialreportonGuotaiJunanFutures 2 观点综述 01 本周原油观点:单边观望,轻仓过节 IEA报告 ...
能源化工天然橡胶周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:13
国泰君安期货·能源化工 天然橡胶周度报告 国泰君安期货研究所·高琳琳 投资咨询从业资格号:Z0002332 日期:2025年9月28日 Guotai Junan Futures all rights reserved, please do not reprint CONTENTS 行业资讯 01 行情走势 02 基本面数据 03 本周观点总结 04 行业资讯 期货价格 基差与月差 其他价差 替代品价格 资金动向 供给 需求 库存 本周观点总结 Special report on Guotai Junan Futures 2 行业资讯 1 行业资讯 1.【泰国前8个月天胶、混合胶合计出口量同比增6.3%】最新数据显示,2025年前8个月,泰国出口天然橡胶(不含复合橡胶)合计为178.9万吨,同比降8%。 其中,标胶合计出口101.7万吨,同比降19%;烟片胶出口26.5万吨,同比增21%;乳胶出口49.6万吨,同比增9%。1-8月,出口到中国天然橡胶合计为69.6 万吨,同比增6%。其中,标胶出口到中国合计为43.3万吨,同比降18%;烟片胶出口到中国合计为8万吨,同比大增300%;乳胶出口到中国合计为18.1 ...
能源化工尿素周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:13
Report Summary 1. Industry Investment Rating No industry investment rating was provided in the report. 2. Core Viewpoints - Short - term: Before the National Day holiday, urea prices are expected to fluctuate due to pre - holiday price cuts to attract orders and some information disturbances. The spot price has limited downside space before and during the holiday, and the futures will fluctuate after the spot price stabilizes [2][3][4]. - Medium - term: The trend is weak. Although exports are accelerating, the pre - stocked trade volume limits price drivers. Weak domestic demand is the main contradiction, and export growth is expected to be unable to offset the weakening domestic demand. The price will gradually approach the cash - flow cost line of fixed - bed plants in northern regions [4]. - Trading strategies: - Unilateral: Fluctuate before the National Day; contracts 11, 12, and 01 have a weak trend, while contracts 02, 03, 04, and 05 are strong with peak - season demand expectations. For contract 01, the upper pressure is 1710 - 1720 yuan/ton, and the static lower support is 1600 - 1620 yuan/ton, with the dynamic support expected to decline. It is recommended to short at high prices [4]. - Inter - period: Reverse spreads for 11 - 05/12 - 05 and 1 - 5 at high prices [4]. - Inter - commodity: No recommendations [4]. 3. Summary by Directory Supply - Capacity: In 2025, the expansion pattern of urea capacity continues. In 2024, the total new capacity was 427 tons, and in 2025, it is expected to be 346 tons [27]. - Production: From September 18 - 24, 2025, China's urea production was 140.15 tons, a week - on - week increase of 7.15 tons (5.38%). Next week, the production is expected to be around 140 - 141 tons, with little change. The production profit is at the break - even point, and the daily production remains high [2][32]. - Cost: Raw material prices are stable, and the factory's cash - flow cost line is stable. The cash - flow cost corresponding to urea currently shows a profit [35][40]. - Net imports (exports): Export policy adjustments may increase future export volumes. In 2025, as of June, the export volume was 6.6 tons [45]. Demand - Agricultural demand: Seasonally, the demand is strong. High - standard farmland construction has increased the demand for urea in corn cultivation. However, currently, the northern agricultural top - dressing demand has basically ended, and the year - on - year growth rate has declined significantly [2][51][54]. - Industrial demand: - Compound fertilizer: The production cost, inventory, and production profit data are provided. Currently, the finished - product sales pressure is high, the operating rate is low, and the demand for urea raw materials is limited [58][59][60]. - Melamine: The production profit, market price, output, and capacity utilization rate data are provided [62][63]. - Real estate: The demand for panels from the real estate industry has limited support, but panel exports are resilient [64]. Inventory - Factory inventory: On September 24, 2025, China's total urea enterprise inventory was 121.82 tons, a week - on - week increase of 5.29 tons (4.54%). The overall inventory shows an upward trend, with some regional differences [3]. - Port inventory: As of September 25, 2025 (week 39), China's urea port sample inventory was 49.63 tons, a week - on - week decrease of 1.97 tons (3.82%). The port inventory is affected by the approaching domestic holiday, with both cargo collection and departure [3]. Valuation The report provides data on urea basis, monthly spreads, and spot prices at home and abroad, which can be used for price and spread analysis [8][12][18][23].
能源化工纸浆周度报告-20250928
Guo Tai Jun An Qi Huo· 2025-09-28 09:13
1. Report Industry Investment Rating - Not provided in the content 2. Core View of the Report - The pulp market is expected to continue its weak and volatile trend in the short term. Supply - side pressure is difficult to ease quickly, with increasing imports and slow inventory reduction at ports. The demand side has certain rigid support but lacks obvious growth momentum [102]. 3. Summary by Relevant Catalogs 3.1 Industry News - As of September 25, 2025, the pulp inventory at Changshu Port was 452,000 tons, a week - on - week decrease of 56,000 tons (11.0%); at Qingdao Port, it was 1.425 million tons, a decrease of 7,000 tons (0.5%); at Gaolan Port, it was 41,000 tons, a decrease of 8,000 tons (16.3%). The total inventory of mainstream ports was 2.033 million tons, a decrease of 79,000 tons (3.7%) [5][6]. - In August 2025, the import volume of bleached softwood pulp was 614,000 tons, a month - on - month decrease of 5.0% and a year - on - year decrease of 10.1%. The cumulative import volume for the year was 5.74 million tons, a cumulative year - on - year increase of 1.4%. The import volume of bleached hardwood pulp was 1.258 million tons, a month - on - month decrease of 6.9% and a year - on - year decrease of 1.4%. The cumulative import volume for the year was 11.152 million tons, a cumulative year - on - year increase of 10.7% [6][7]. 3.2 Market Data 3.2.1 Market Trends - On September 26, 2025, the basis for Silver Star was 634 yuan/ton, a week - on - week increase of 0.32% and a year - on - year increase of 89.82%; the basis for Russian Needle was 184 yuan/ton, a week - on - week increase of 1.10% and a year - on - year increase of 258.62%; the Silver Star - Russian Needle spread was 450 yuan/ton, with no week - on - week or year - on - year change [16]. - The 11 - 01 month spread was - 256 yuan/ton, a week - on - week increase of 14.09%; the 01 - 05 month spread was - 24 yuan/ton, a week - on - week decrease of 33.33% [21]. 3.3 Fundamental Data 3.3.1 Price - The spread between softwood and hardwood pulp was stable. On September 26, 2025, the spread between Silver Star and Goldfish was 1,430 yuan/ton, with no week - on - week change and a year - on - year increase of 3.62%; the spread between Russian Needle and Goldfish was 980 yuan/ton, with no week - on - week change and a year - on - year increase of 5.38% [28]. - The import profit of softwood and hardwood pulp decreased. On September 26, 2025, the import profit of softwood pulp (Silver Star) was - 58 yuan/ton, a week - on - week decrease of 3.38% and a year - on - year decrease of 394.60%; the import profit of hardwood pulp (Star) was - 171.70 yuan/ton, a week - on - week decrease of 0.86% and a year - on - year decrease of 294.01% [31]. - The prices of different types of pulp showed different trends. On September 26, 2025, the prices of softwood pulp such as Silver Star, Kalip, and Northwood were 5,650 yuan/ton, 5,800 yuan/ton, and 6,050 yuan/ton respectively, with no week - on - week change; the prices of hardwood pulp such as Goldfish, Star, and Bird were 4,220 yuan/ton, 4,250 yuan/ton, and 4,200 yuan/ton respectively, with no week - on - week change [34][38]. 3.3.2 Supply - The wood chip purchase price in East China was generally stable, with a slight decrease in the purchase price of poplar chips by Champion Paper [43]. - The price of domestic chemimechanical pulp decreased slightly this week, the price of hardwood pulp was stable, and the supply increased. On September 25, 2025, the daily average price of domestic chemimechanical pulp was 3,825 yuan/ton, a week - on - week decrease of 0.22%; the weekly output of domestic hardwood pulp was 131,000 tons, a week - on - week increase of 2.34% [47][49]. - In July 2025, the European port inventory decreased slightly month - on - month, and the global pulp out - port volume increased seasonally month - on - month but was relatively low year - on - year [52]. - The W20 softwood pulp shipment volume was at a low level with high inventory, while the hardwood pulp shipment volume remained high, but the inventory days continued to decline [54]. - In July 2025, the export volume of softwood pulp from Canada, Finland, Chile, and the United States to China increased significantly month - on - month, and in August, the export volume of Chilean softwood pulp to China decreased month - on - month [58]. - In July 2025, the export volume of hardwood pulp from Brazil, Indonesia, Uruguay, and Chile increased month - on - month, and in August, the export volume of Brazilian hardwood pulp to China decreased seasonally month - on - month, while the export volume of Uruguayan hardwood pulp to China increased significantly [62]. - In August 2025, China's total pulp import volume decreased, with softwood pulp down 5.01% month - on - month, hardwood pulp down 6.92% month - on - month, and chemimechanical pulp down 27.41% month - on - month [66]. 3.3.3 Demand - The price of offset paper was weakly sorted this week. The supply was sufficient, but the downstream demand was weak, and the market was in a stalemate [70]. - The average price of coated paper was slightly adjusted. The supply increased, but the consumption was still sluggish due to the macro - environment and electronic media impact [74]. - The supply and demand of white cardboard both showed an upward trend. The large manufacturers planned to increase the order - taking price by 100 yuan/ton in October, and the market low - price increased [78]. - The market of tissue paper was flat, the terminal demand was weak, and the industry's overall operating rate remained low [82]. - In August 2025, the retail sales in the pulp terminal demand area recovered slightly seasonally month - on - month, and the year - on - year growth of cultural office supplies, daily necessities, and books and magazines was significant [86]. 3.3.4 Inventory - On September 26, 2025, the warehouse receipt quantity of pulp (warehouse) was 226,100 tons, a week - on - week decrease of 0.15% and a year - on - year decrease of 44.18%; the warehouse receipt quantity of pulp (factory) was 9,200 tons, a week - on - week decrease of 49.34% and a year - on - year decrease of 66.47% [89]. - The port inventory was at a medium - low level within the year, and the inventory of domestic mainstream ports showed a destocking trend this period [98].