China Bonded Bunker Fuel Sales Decline in August

China's bonded marine fuel market registered a pronounced slowdown during August, driven by a convergence of seasonal weather disruptions, constrained refinery output, and cautious purchasing behavior among commercial vessel operators. According to monthly market monitoring data from Beijing-based commodity intelligence specialist JLC Network Technology, published by Manifold Times on 11 September 2026, bonded bunker fuel transactions across the country slipped to 1.61 million metric tonnes for the month. This represented an average daily volume of 51,974 metric tonnes, marking a month-on-month decrease of 9.62 percent compared with July performance.

Several concurrent operational headwinds affected coastal bunkering anchorages throughout August. Severe typhoon activity repeatedly swept through eastern coastal provinces, forcing maritime authorities and port operators to temporarily halt bunkering operations at key maritime gateways. At the same time, available product availability at major domestic supply bases tightened, while elevated bunker benchmarks prompted shipowners to restrict purchasing to immediate operational necessities.

Weather Disruptions and Pricing Pressures Constrain Bunker Demand

The contraction in bonded sales across August reflected both physical logistics disruptions and commercial selectivity. Port stops in East China, particularly in and around the Zhoushan and Ningbo maritime zones, experienced intermittent operational suspensions as maritime safety agencies monitored typhoon corridors. These precautionary suspensions caused scheduling backlogs, deferred vessel arrivals, and reduced the window for offshore barge deliveries.

In addition to meteorological obstacles, marine fuel pricing dynamics discouraged discretionary buying. As bonded bunker prices maintained an upward trajectory, ship operators engaged in strict voyage optimization, minimizing bunkering volumes in Chinese ports where possible. The caution among buyers combined with localized inventory shortages to restrict overall turnover across domestic ports.

Licensed Supplier Performance

Despite the month-on-month decline, volume allocations across the domestic supplier landscape demonstrated relative stability in market positioning:

• Sinopec (Zhoushan) maintained the largest single volume share, delivering 620,000 metric tonnes during August.
• Chimbusco accounted for 315,000 metric tonnes of bonded marine fuel sales.
• Suppliers holding regional bunkering permits collectively handled 614,200 metric tonnes across their designated operational ports.
• SinoBunker recorded 57,000 metric tonnes of fuel deliveries.
• China Changjiang Bunker, an affiliate of Sinopec, recorded 5,000 metric tonnes in bonded transactions.

Refinery Economics and Quotas Squeeze Low-Sulfur Output

Upstream marine fuel supply within China contracted sharply during the month, constraining the volume of domestic product available for bonded delivery. Chinese refineries produced approximately 1.12 million metric tonnes of low-sulfur fuel oil (LSFO) in August, translating to a daily average of 36,258 metric tonnes. This represented a month-on-month drop of 12.87 percent, according to JLC figures.

The decline in LSFO production stemmed largely from refining economics and operational priorities. Favorable cracking spreads for light and middle distillates prompted state-owned refiners, notably within the Sinopec system, to maximize refinery yields of gasoline and diesel at the expense of residual fuel oil. Scheduled turnaround schedules at specific processing plants further capped overall output.

Policy mechanisms and export allocations also influenced processing decisions. PetroChina reduced its refineries' LSFO manufacturing schedules in response to dwindling export quotas. Plant-level operations showed marked divergence across companies. CNOOC expanded its production base as Taizhou Petrochemical resumed operations following earlier downtime. Conversely, Zhoushan Petrochemical reported zero LSFO output for the month, while Zhejiang Petroleum & Chemical (ZPC) and Sinochem likewise produced no LSFO. Sinochem did, however, manufacture and export 10,000 metric tonnes of marine gas oil (MGO).

Domestic Marine Fuel and Import Trends

Demand across China's domestic-trade shipping sectors mirrored the subdued sentiment observed in international bonded markets. Coastal and inland navigation experienced seasonal softness, exacerbated by severe regional weather. Domestic-trade heavy bunker fuel demand settled at 270,000 metric tonnes, or 8,710 metric tonnes per day, reflecting a 10.00 percent month-on-month decline. Domestic light bunker fuel consumption fell by 14.29 percent to 120,000 metric tonnes, or 3,871 metric tonnes per day, as downstream buyers resisted high domestic MGO pricing.

On the domestic supply side, blenders delivered 250,000 metric tonnes of heavy bunker fuel, down 7.41 percent month on month, amid tight blendstock availability—particularly for low-sulfur residual components. In northern refining centres, independent blenders reduced activity amid strict tax inspections and maintained limited inventories of tax-inclusive marine fuels. Domestic MGO supply shrank 11.76 percent to 150,000 metric tonnes due to firm feedstock costs.

To compensate for reduced domestic production, bonded bunker distributors turned to import routes earlier in the quarter. Customs calculations showed China imported 530,400 metric tonnes of bonded marine fuel in July, up 2.93 percent from June, though down 17.54 percent year on year. Independent bonded distributors resumed LSFO imports following a three-month pause, while arrivals of high-sulfur fuel oil (HSFO) increased following improved procurement windows in June. Total bonded bunker imports for the first seven months of 2026 reached 3.91 million metric tonnes, an increase of 1.68 percent compared with the same period in 2025.

July import origins demonstrated ongoing reliance on established regional supply corridors:

• Russia remained the primary supplier, providing 234,600 metric tonnes, representing 44.23 percent of total bonded imports.
• Singapore followed with 153,800 metric tonnes, accounting for 29.00 percent of arrivals.
• South Korea delivered 81,100 metric tonnes, representing a 15.30 percent market share.
• Japan supplied 60,800 metric tonnes, comprising 11.47 percent of the monthly total.

Industry Impact

The monthly reduction in Chinese bonded bunker sales highlights the ongoing sensitivity of East Asian marine fuel hubs to seasonal climate conditions, upstream refining adjustments, and tax enforcement frameworks. When weather fronts disrupt offshore bunkering anchorages, shipowners operating on transpacific and intra-Asian container and bulk routes frequently redirect stem requests to alternative hubs such as Singapore, Busan, or regional Japanese ports.

Furthermore, the persistent reliance on bonded imports to offset domestic refining shortfalls underscores the direct relationship between China's clean product export quota allocations and regional bunker market balances. When Chinese refiners prioritize high-margin transport fuels or exhaust fuel oil export quotas, domestic bunkering hubs require greater volumes of imported blendstocks and finished LSFO. This dynamic alters cargo flows from the Russian Far East and Singapore, influencing barge availability and regional pricing spreads throughout the Western Pacific.

Key Takeaways

• Bonded marine fuel sales in China contracted by 9.62 percent month on month in August 2026 to 1.61 million metric tonnes, affected by typhoon disruptions and cautious vessel purchasing.
• Domestic production of low-sulfur fuel oil fell by 12.87 percent to 1.12 million metric tonnes as refiners prioritized gasoline and diesel crack spreads amid quota limitations.
• Bonded bunker imports rose 2.93 percent month on month in July to 530,400 metric tonnes, with Russian and Singaporean origins supplying over 73 percent of delivered volumes.
• Domestic coastal and inland shipping demand experienced double-digit percentage drops across both heavy and light marine fuels, suppressed by inclement weather and firm product pricing.