示频度期货 沥青厚报 研究中心能化团队 2025/8/22 基差&月差 3600 4000 4000 3500 3500 3500 3400 3000 3000 3300 2500 2500 3200 2000 20000 3100 BU11 BU12 BU07 BU08 BU09 BU10 BU06 3/22 -- 8/21 -- 8/20 -- 8/15 -- 8/15 -- 7/23 2023 2024 2025 2024 期货成交量 期货库存 期货持企量 3000000 12000000 140000 1200000 25000000 10000000 1 000000 8000000 20000000 80000 600000 1 5000000 60000 400000 10000000 40000 2000000 500000 20000 2023 2024 2024 2025 2023 2025 2025 2023 2024 机票 重交沥青山东市场低端价 重交沥青华南市场低端价 重交沥青华东市场低端价 5000 5500 5500 5000 5000 4500 4500 4500 4000 4 ...

甲醇聚烯烃早报 研究中心能化团队 2025/08/21 | 甲 醇 | | | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 日期 | 动力煤期 | | 江苏现货 华南现货 | 鲁南折盘 | 西南折盘面 | 河北折盘 | 西北折盘 | CFR中国 | CFR东南 | | 进口利润 主力基差 | 盘面MTO | | | 货 | | | 面 | | 面 | 面 | | 亚 | | | 利润 | | 2025/08/1 4 | 801 | 2355 | 2350 | 2555 | 2560 | 2560 | 2720 | 269 | 328 | 42 | -9 | -1237 | | 2025/08/1 5 | 801 | 2325 | 2325 | 2550 | 2560 | 2560 | 2695 | 264 | 324 | 34 | -8 | -1237 | | 2025/08/1 8 | 801 | 2307 | 2303 | 2515 | 2535 ...

1. Report Industry Investment Rating No relevant content provided. 2. Core Views of the Report - The current fundamental market of crude oil is healthy. With low inventories in Cushing, combined with hurricane expectations and Russia - related events, crude oil has upward momentum. However, the seasonal demand weakness in mid - August will limit its upside. A short - term target price of $70.4/barrel for WTI is given, suggesting short - term long positions on dips and stop - profit, and left - side ambush for Russian geopolitical expectations in September and the hurricane supply - disruption season when oil prices slump sharply [2]. - For methanol, coal prices are rising, increasing methanol costs, but coal - to - methanol profits are still at a high level year - on - year. Domestic and overseas production capacity is increasing, leading to high supply pressure. Traditional demand has low profits, and olefin demand is weak. It is recommended to wait and see as the current situation is weak but may improve in the peak season [4]. - Regarding urea, domestic production has started to increase, and although enterprise profits are low, they are expected to bottom out. Supply is relatively loose. Domestic agricultural demand is ending, and overall demand is average. The price range is narrowing, and it is advisable to focus on long - position opportunities on dips [6]. - For rubber, it is expected to oscillate in the short term. A neutral approach is recommended, and partial closing of the long RU2601 and short RU2509 position is suggested [10]. - For PVC, the overall situation is supply - strong and demand - weak with high valuations. The cost of calcium carbide has declined, and the fundamentals are poor. It is recommended to wait and see [10]. - In the case of styrene, the market macro - sentiment is good, and there is still cost support. The BZN spread has room for upward repair, and port inventories are decreasing. The price may follow the cost to oscillate upward [12][13]. - For polyethylene, the market is expecting favorable policies from the Chinese Ministry of Finance in the third quarter, and there is cost support. But inventory pressure and seasonal factors exist. It is recommended to hold short positions [15]. - For polypropylene, Shandong refinery profits have stopped falling and rebounded, and the cost may dominate the market. It is expected to follow crude oil to oscillate stronger [16]. - For PX, the load is high, and downstream PTA has many short - term maintenance. However, due to new PTA installations, PX is expected to continue inventory reduction. There is support for valuation, but the upside is limited in the short term. It is recommended to follow crude oil to go long on dips [18][19]. - For PTA, supply may continue to increase inventory, and the processing fee has limited room. Demand is slightly improving, and it is recommended to follow PX to go long on dips when the peak - season demand improves [20]. - For ethylene glycol, the supply load is decreasing, and downstream load is increasing. Port inventories are decreasing, but the industry is expected to enter an inventory - accumulation cycle. Valuation is relatively high, and there is downward pressure on short - term valuation [21]. 3. Summary by Related Catalogs Crude Oil - **Market Quotes**: WTI main crude oil futures rose $0.14, or 0.22%, to $63.28; Brent main crude oil futures rose $0.33, or 0.50%, to $66.46; INE main crude oil futures fell 3.70 yuan, or 0.76%, to 482.6 yuan [1]. - **Data**: China's weekly crude oil data shows that crude oil arrival inventory increased by 1.37 million barrels to 207.19 million barrels, a 0.67% increase. Gasoline commercial inventory decreased by 1.81 million barrels to 90.14 million barrels, a 1.97% decrease. Diesel commercial inventory decreased by 0.96 million barrels to 104.59 million barrels, a 0.91% decrease. Total refined oil commercial inventory decreased by 2.77 million barrels to 194.74 million barrels, a 1.40% decrease [1]. Methanol - **Market Quotes**: On August 18, the 01 - contract fell 16 yuan/ton to 2396 yuan/ton, and the spot price fell 23 yuan/ton, with a basis of - 94 [4]. - **Fundamentals**: Coal prices are rising, increasing methanol costs, but coal - to - methanol profits are still high year - on - year. Domestic and overseas production capacity is increasing, leading to high supply pressure. Traditional demand has low profits, and olefin demand is weak [4]. Urea - **Market Quotes**: On August 18, the 01 - contract rose 17 yuan/ton to 1754 yuan/ton, and the spot price rose 30 yuan/ton, with a basis of - 24 [6]. - **Fundamentals**: Domestic production has started to increase, and although enterprise profits are low, they are expected to bottom out. Supply is relatively loose. Domestic agricultural demand is ending, and overall demand is average [6]. Rubber - **Market Quotes**: NR and RU oscillated and consolidated [8]. - **Data**: As of August 14, 2025, the operating load of all - steel tires of Shandong tire enterprises was 63.07%, up 2.09 percentage points from last week and 7.42 percentage points from the same period last year. The operating load of semi - steel tires of domestic tire enterprises was 72.25%, down 2.28 percentage points from last week and 6.41 percentage points from the same period last year. As of August 10, 2025, China's natural rubber social inventory was 127.8 tons, a 0.85% decrease. The total inventory of dark - colored rubber was 79.7 tons, a 0.8% decrease, and the total inventory of light - colored rubber was 48 tons, a 0.8% decrease. RU inventory increased by 1%. As of August 17, 2025, the inventory of natural rubber in Qingdao was 48.54 (- 0.18) tons [9]. - **Analysis of Long and Short Views**: Bulls believe that weather and rubber - forest conditions in Southeast Asia, especially Thailand, may lead to production cuts, the seasonal trend turns upward in the second half of the year, and China's demand is expected to improve. Bears think that macro expectations are uncertain, demand is in the seasonal off - season, and the production - cut amplitude may be lower than expected [12]. PVC - **Market Quotes**: The PVC01 contract fell 43 yuan to 5054 yuan, the spot price of Changzhou SG - 5 was 4800 (- 50) yuan/ton, the basis was - 254 yuan/ton, and the 9 - 1 spread was - 134 (+9) yuan/ton [10]. - **Fundamentals**: The cost of calcium carbide has decreased, the overall operating rate of PVC is 80.3%, up 0.9%. The downstream operating rate is 42.8%, down 0.1%. Factory inventory is 32.7 tons (- 1), and social inventory is 81.2 tons (+3.5). The enterprise's comprehensive profit is at a high level of the year, with high valuation pressure, low maintenance volume, high production, and weak downstream demand. The Indian anti - dumping policy affects exports [10]. Styrene - **Market Quotes**: Spot and futures prices fell, and the basis weakened [12]. - **Analysis**: The market macro - sentiment is good, and there is still cost support. The BZN spread is at a low level in the same period, with large upward - repair space. The supply of pure benzene is still abundant, and the production of styrene is increasing. Port inventories are decreasing significantly. The short - term BZN may be repaired, and the price may follow the cost to oscillate upward [12][13]. Polyethylene - **Market Quotes**: Futures prices fell [15]. - **Analysis**: The market is expecting favorable policies from the Chinese Ministry of Finance in the third quarter, and there is cost support. Inventory pressure from traders is high, and demand is in the seasonal off - season. In August, there is a large production - capacity release plan. It is recommended to hold short positions [15]. Polypropylene - **Market Quotes**: Futures prices fell [16]. - **Analysis**: Shandong refinery profits have stopped falling and rebounded, and the supply of propylene is expected to increase. The downstream operating rate is seasonally oscillating downward. In August, there is a planned production - capacity release of 45 tons. In the context of weak supply and demand, the cost may dominate the market, and it is expected to follow crude oil to oscillate stronger [16]. PX - **Market Quotes**: The PX11 contract rose 72 yuan to 6760 yuan, PX CFR rose 6 dollars to 833 dollars, the basis was 88 yuan (- 27), and the 11 - 1 spread was 36 yuan (+30) [18]. - **Fundamentals**: China's PX load is 84.3%, up 2.3%, and Asia's load is 74.1%, up 0.5%. Some devices have restarted or reduced load. PTA load is 76.4%, up 1.7%. In early August, South Korea's PX exports to China were 11.2 tons, down 0.5 tons year - on - year. Inventories decreased in June. PXN is 255 dollars (+2), and naphtha crack spread is 88 dollars (+7). PX is expected to continue inventory reduction, and there is support for valuation, but the upside is limited in the short term [18][19]. PTA - **Market Quotes**: The PTA01 contract rose 30 yuan to 4746 yuan, the East China spot price rose 10 yuan to 4670 yuan, the basis was - 12 yuan (+1), and the 9 - 1 spread was - 50 yuan (- 10) [20]. - **Fundamentals**: PTA load is 76.4%, up 1.7%. Some devices have stopped or restarted. The downstream load is 89.4%, up 0.6%. Terminal loads are increasing. Social inventory (excluding credit warehouse receipts) on August 8 was 227.3 tons, up 3.3 tons. The spot processing fee fell 19 yuan to 178 yuan, and the futures processing fee rose 2 yuan to 335 yuan. Supply may continue to increase inventory, and the processing fee has limited room. Demand is slightly improving [20]. Ethylene Glycol - **Market Quotes**: The EG09 contract fell 23 yuan to 4346 yuan, the East China spot price fell 21 yuan to 4441 yuan, the basis was 92 yuan (+4), and the 9 - 1 spread was - 46 yuan (- 3) [21]. - **Fundamentals**: The supply load is 66.4%, down 2%. Some devices have restarted or reduced load. The downstream load is 89.4%, up 0.6%. Import arrival forecast is 14.1 tons, and port inventory is 54.7 tons, down 0.6 tons. The cost of ethylene is flat, and the price of coal has risen. The industry is expected to enter an inventory - accumulation cycle, and the valuation is relatively high, with downward pressure on short - term valuation [21].

Report Overview - Report title: "Asphalt Report" [2] - Research team: Research Center's Energy and Chemicals Team [3] - Report date: August 18, 2025 [3] Core Data Summary Futures Contracts - **Prices**: The prices of various BU contracts (BU主力合约, BU06, BU09, BU12, BU03) decreased from July 17 to August 15. For example, the BU主力合约 dropped from 3628 to 3461, a decrease of 167 points [4]. - **Volume and Open Interest**: Both trading volume and open interest declined. Volume decreased from 255,138 on July 17 to 214,163 on August 15, and open interest dropped from 474,048 to 436,319 [4]. - **Inventory**: Futures inventory decreased from 42,950 on July 17 to 31,640 on August 15 [4]. Spot Market - **Prices**: Spot prices in different regions showed varying trends. For instance, the low - end price in the Shandong market decreased from 3570 to 3520, while the low - end price in the North China market increased from 3660 to 3680 [4]. - **Price Spreads**: The price spreads between regions and contracts also changed. For example, the Shandong - East China spread varied from - 100 to - 80, and the 06 - 09 spread changed from - 244 to - 179 [4]. Margins and Spreads - **Margins**: The asphalt Brent spread and asphalt Marrow profit showed significant fluctuations. The asphalt Marrow profit decreased from - 15 to - 53 from August 7 to August 15 [4]. - **Profits**: The comprehensive profit of ordinary refineries fluctuated between 452 and 532, while the import profit (South Korea - East China) decreased from - 154 to - 239 [4]. Related Prices - **Crude Oil and Refined Products**: Brent crude oil prices fluctuated between 65.6 and 68.5, and the prices of gasoline and diesel in the Shandong market also changed slightly [4].

沥青厚报 研究中心能化团队 2025/8/15 | | 指标 | 7/16 | 8/6 | 8/12 | 8/13 | 8/14 | 日度变化 | 間度5% | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | BU主力合约 | 3623 | 3529 | 3506 | 3503 | 3472 | -31 | -57 | | | BU06 | 3388 | 3370 | 3340 | 3338 | 3325 | -13 | -45 | | | BU09 | 3623 | રૂટરર | 3530 | 3534 | 3510 | -24 | -45 | | | BU12 | 3450 | 3441 | 3406 | 3406 | 3383 | -23 | -58 | | 房 | BU03 | 3405 | 3381 | 3353 | 3340 | 3344 | 4 | -37 | | | 成交量 | 151019 | 219521 | 168649 | 176721 | 222526 | 45805 | 3002 | | | 持仓量 | 46 ...

ljs 加安期货 沥青早报 研究中心能化团队 2025/8/12 | | 指标 | 7/11 | 8/1 | 8/7 | 8/8 | 8/11 | 日度变化 | 周度变化 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | BU主力合约 | 3606 | 3658 | 3528 | 3478 | 3481 | 3 | -177 | | | BU06 | 3358 | 3456 | 3357 | 3322 | 3311 | -11 | -145 | | | BU09 | 3606 | 3658 | 3552 | 3511 | 3512 | 7 | -146 | | | BU12 | 3430 | 3542 | 3438 | 3391 | 3382 | -6 | -157 | | 播 1 | BU03 | 3382 | 3484 | 3378 | 3332 | 3326 | -6 | -158 | | | 成交量 | 230600 | 227589 | 233769 | 241736 | 239377 | -2359 | 11788 | | ...

Report Overview - Report Title: "Asphalt Morning Report" [2] - Research Team: Research Center's Energy and Chemicals Team - Report Date: August 11, 2025 [3] 1. Report Industry Investment Rating - Not provided in the given content 2. Report Core View - Not explicitly stated in the given content 3. Summary by Relevant Catalogs 3.1 Futures Contract Prices - The prices of various BU asphalt futures contracts decreased from July 10 to August 8. For example, the BU main contract dropped from 3629 to 3478, a decrease of 181 [4]. 3.2 Trading Volume and Open Interest - The trading volume increased by 7967 on a daily basis and decreased by 26929 on a weekly basis to 241736 on August 8. The open interest increased by 5075 daily and decreased by 44962 weekly to 454594 [4]. 3.3 Spot Market Prices - Spot prices in different regions showed varying degrees of decline. For instance, the low - end price in the Shandong market decreased by 50 from July 10 to August 8, reaching 3550 [4]. 3.4 Basis and Calendar Spreads - The basis in different regions generally increased. For example, the Shandong basis increased from - 49 to 72, a rise of 131. Calendar spreads such as 06 - 09 and 09 - 12 also showed certain changes [4]. 3.5 Crack Spreads and Profits - The asphalt Brent crack spread increased from - 96 to 67, a rise of 130. The ordinary refinery's comprehensive profit increased from 420 to 506, an increase of 88 [4]. 3.6 Related Prices - Brent crude oil prices decreased from 70.2 to 66.4, a decrease of 3.2. The gasoline and diesel prices in the Shandong market also showed certain fluctuations [4].

1. Report Industry Investment Rating - No relevant information provided 2. Core Viewpoints - No explicit core viewpoints presented in the given content 3. Summary by Relevant Catalogs Futures Contracts - BU主力合约价格8月1日为3658，日度变化-1，周度变化56；BU06为3456，日度变化9，周度变化72；BU09为3658，日度变化-1，周度变化56；BU12为3542，日度变化12，周度变化83；BU03为3484，日度变化15，周度变化92 [4] - 成交量8月1日为227589，日度变化-41076，周度变化-30630；持仓量为508125，日度变化8569，周度变化54367；合约为41910，日度变化0，周度变化-1040 [4] Spot Market - 山东市场低端价8月1日为3600，日度变化0，周度变化0；华东市场低端价为3670，日度变化0，周度变化0；华南市场低端价为3580，日度变化0，周度变化30；华北市场低端价为3720，日度变化-10，周度变化10；东北市场低端价为3850，日度变化0，周度变化-50 [4] - 京博（海韵）现货价8月1日为3730，日度变化20，周度变化40；岚海为3710，日度变化10，周度变化20；鑫海（鑫渤海）为3720，日度变化-10，周度变化10 [4] Basis and Monthly Spread - 山东 - 华东价差8月1日为-70，日度变化0，周度变化0；山东 - 东北为-250，日度变化0，周度变化50；华东 - 华南为90，日度变化0，周度变化-30 [4] - 山东基差8月1日为-58，日度变化1，周度变化-56；华东基差为12，日度变化1，周度变化-56；华南基差为-78，日度变化1，周度变化-26 [4] - 03 - 06月差8月1日为28，日度变化6，周度变化20；06 - 09为-202，日度变化10，周度变化16；09 - 12为116，日度变化-13，周度变化-27；12 - 03为58，日度变化-3，周度变化-9；连一连二为1，日度变化-3，周度变化-21 [4] Crack Spread and Profit - 沥青Brent裂差8月1日为-212，日度变化37，周度变化-238；沥青马瑞利润为-261，日度变化34，周度变化-215；普通炼厂综合利润为260，日度变化2，周度变化-195 [4] - 马瑞型炼厂综合利润数据缺失；进口利润（韩国 - 华东）8月1日为-164，日度变化0，周度变化-22；进口利润（新加坡 - 华南）为-992，日度变化0，周度变化0 [4] Related Prices - Brent原油8月1日价格为72.5，日度变化-0.7，周度变化4.1；汽油山东市场价为7799，日度变化-55，周度变化4；柴油山东市场价为6646，日度变化-74；渣油山东市场价为3650，日度变化-25，周度变化0 [4]

Group 1: Futures Contract Information - BU main contract price on 7/30 was 3650, with a daily change of 31 and a weekly change of 41 [4][20] - BU06 price on 7/30 was 3438, with a daily change of 22 and a weekly change of 53 [4][20] - BU09 price on 7/30 was 3650, with a daily change of 31 and a weekly change of 41 [4][20] - BU12 price on 7/30 was 3555, with a daily change of 40 and a weekly change of 72 [4][20] - BU03 price on 7/30 was 3469, with a daily change of 25 and a weekly change of 79 [4][20] Group 2: Trading Volume and Open Interest - Trading volume on 7/30 was 350130, with a daily change of 23001 and a weekly change of 4870 [4][20] - Open interest on 7/30 was 480556, with a daily change of 35507 and a weekly change of 19993 [4][20] Group 3: Market Low - end Prices - Shandong market low - end price on 7/30 was 3600, with a daily change of 20 and a weekly change of - 20 [4][20] - East China market low - end price on 7/30 was 3670, with no daily or weekly change [4][20] - South China market low - end price on 7/30 was 3550, with no daily or weekly change [4][20] - North China market low - end price on 7/30 was 3720, with a daily change of 10 and a weekly change of - 10 [4][20] - Northeast market low - end price on 7/30 was 3850, with no daily change and a weekly change of - 50 [4][20] Group 4: Spot Prices - Jingbo (Haiyun) spot price on 7/30 was 3710, with a daily change of 20 and no weekly change [4][20] - Mismo spot price on 7/30 was 3700, with a daily change of 40 and a weekly change of - 10 [4][20] - Xinhai (Xin Bohai) spot price on 7/30 was 3720, with a daily change of 10 and a weekly change of - 10 [4][20] Group 5: Basis and Monthly Spread - Shandong - East China basis on 7/30 was - 70, with a daily change of 20 and a weekly change of - 20 [4][20] - Shandong - Northeast basis on 7/30 was - 250, with a daily change of 20 and a weekly change of 30 [4][20] - East China - South China basis on 7/30 was 120, with no daily or weekly change [4][20] - Shandong basis on 7/30 was - 50, with a daily change of - 11 and a weekly change of - 61 [4][20] - East China basis on 7/30 was 20, with a daily change of - 31 and a weekly change of - 41 [4][20] - South China basis on 7/30 was - 100, with a daily change of - 31 and a weekly change of - 41 [4][20] - 03 - 06 spread on 7/30 was 31, with a daily change of 3 and a weekly change of 26 [4][20] - 06 - 09 spread on 7/30 was - 212, with a daily change of - 9 and a weekly change of 12 [4][20] - 09 - 12 spread on 7/30 was 125, with a daily change of - 9 and a weekly change of - 31 [4][20] - 12 - 03 spread on 7/30 was 56, with a daily change of 15 and a weekly change of - 7 [4][20] - Continuous first - continuous second spread on 7/30 was 14, with a daily change of - 7 and a weekly change of - 27 [4][20] Group 6: Crack Spread and Profit - Asphalt Brent crack spread on 7/30 was - 199, with a daily change of - 109 and a weekly change of - 230 [4][20] - Asphalt MRE profit on 7/30 was - 249, with a daily change of - 99 and a weekly change of - 208 [4][20] - Ordinary refinery comprehensive profit on 7/30 was 314, with a daily change of - 79 and a weekly change of - 132 [4][20] - MRE - type refinery comprehensive profit on 7/30 was - 90, with a daily change of - 84 and a weekly change of - 162 [4][20] - Import profit (South Korea - East China) on 7/30 was - 153, with no daily or weekly change [4][20] - Import profit (Singapore - South China) on 7/30 was - 1005, with a daily change of 1 and a weekly change of - 1 [4][20] Group 7: Related Prices - Shandong gasoline market price on 7/30 was 7851 [21] - Shandong diesel market price on 7/30 was 6731 [21] - Shandong residue oil market price on 7/30 was 3640 [21]

Report Summary 1. Report Industry Investment Rating No information provided. 2. Core Viewpoints No information provided. 3. Summary by Relevant Catalogs Futures Contracts - The closing prices of BU main contract, BU09, and BU12 on July 29 were 3619, 3619, and 3485 respectively, with daily changes of 50, 50, and 44, and interval changes of -38, -38, and 0 [4]. - The closing prices of BU06 and BU03 on July 29 were 3416 and 3444 respectively, with daily changes of 38 and 16, and interval changes of 10 and 16 [4]. Trading Volume and Open Interest - The trading volume on July 29 was 327,129, a daily decrease of 16,850 and an interval increase of 117,100 [4]. - The open interest on July 29 was 445,049, a daily increase of 8 and an interval decrease of 34,604 [4]. Spot Prices - The low - end prices in Shandong, East China, South China, North China, and Northeast markets on July 29 were 3580, 3670, 3550, 3710, and 3850 respectively, with daily changes of 0, 0, 0, 10, and 0, and interval changes of -60, 0, -10, -30, and -50 [4]. - The prices of Jingbo (Haiyun), Runo, and Xinhai (Xin Bohai) on July 29 were 3690, 3660, and 3710 respectively, with daily changes of 0, -10, and 10, and interval changes of -30, -50, and -30 [4]. Basis and Monthly Spread - The basis of Shandong, East China, and South China on July 29 were -39, 51, and -69 respectively, with daily changes of -50, -50, and -50, and interval changes of -22, 38, and 28 [4]. - The monthly spreads of 03 - 06, 06 - 09, 09 - 12, and 12 - 03 on July 29 were 28, -203, 134, and 41 respectively, with daily changes of 21, -12, 6, and -15, and interval changes of 6, 48, -38, and -16 [4]. Crack Spread and Profit - The asphalt Brent crack spread on July 29 was -90, a daily decrease of 89 and an interval decrease of 137 [4]. - The asphalt Ma Rui profit on July 29 was -150, a daily decrease of 80 and an interval decrease of 122 [4]. - The comprehensive profit of ordinary refineries and Ma Rui - type refineries on July 29 were 393 and -6 respectively, with daily changes of -56 and -82, and interval changes of -66 and -92 [4]. - The import profits of South Korea - East China and Singapore - South China on July 29 were -153 and -1006 respectively, with daily changes of -5 and -6, and interval changes of -1 and -10 [4]. Related Prices - The price of Brent crude oil on July 29 was 70.0, a daily increase of 1.6 and an interval increase of 1.5 [4]. - The market prices of gasoline, diesel, and residue oil in Shandong on July 29 were 7795, 6675, and 3650 respectively, with daily changes of 39, 37, and 0, and interval changes of -43, -13, and 0 [4].