According to SMM, zinc slag payables pulled back slightly but remained at highs seen in recent years. What were the reasons? How will they trend going forward?

SMM News on May 21: Guangdong region: Premiums in this region trended gradually lower this week, mainly due to increased arrivals coupled with weakening consumption. As of Thursday, high-quality copper was quoted at 240 yuan/mt, down 30 yuan/mt from last Thursday; standard-quality copper was quoted at a premium of 160 yuan/mt, down 40 yuan/mt from last Thursday; SX-EW copper was quoted at 90 yuan/mt, down 40 yuan/mt from last Thursday. On Thursday, the price spread of standard-quality copper premiums between Shanghai and Guangdong showed Guangdong higher by 270 yuan/mt, and it widened to 300 yuan/mt mid-week. The relatively large price spread led to cargoes from Jiangxi and Shanghai flowing southward. According to SMM statistics, as of Thursday, total inventory in Guangdong warehouses was 20,300 mt, up 3,400 mt from last Thursday, while warrants totaled 4,900 mt, down 152 mt from last Thursday. Specifically: warehouse arrivals this week were 17,000 mt/week, up 4,000 mt/week WoW, higher than the annual average (14,000 mt/week), mainly due to increased arrivals from northern cargoes. Warehouse withdrawals were 13,700 mt/week, down 1,100 mt WoW, slightly below the annual average (14,200 mt/week), as terminal orders decreased and copper processing enterprises' operating rates declined. Looking ahead to next week, affected by increased supply and weakening demand (according to our understanding, a large copper processing enterprise will see significant production cuts next week), inventory is expected to continue increasing, and spot premiums are expected to continue declining. (The above information is based on market collection and comprehensive assessment by the SMM research team. The information provided in this article is for reference only. This article does not constitute a direct recommendation for investment research decisions. Clients should make prudent decisions and not use this as a substitute for independent judgment. Any decisions made by clients are unrelated to SMM.)

[SMM Analysis]: Copper-related Policy Shifts Across the Americas: Copper is no longer merely an industrial metal — it is rapidly emerging as a strategic resource. From mining policy reforms in Chile and Peru, to the U.S. Section 232 investigation and the strengthening of North American critical minerals strategies, copper policies across the Americas in 2025–2026 are set to exert profound influence over global copper supply-demand balances, smelting dynamics, and copper price volatility.

On May 12, Yutong Group and CATL signed a comprehensive strategic cooperation memorandum of understanding in Ningde, Fujian. The partnership will focus on four core areas: joint overseas expansion, full-scenario electrification of commercial vehicles, heavy-duty truck battery swapping, and co-branding.

[Domestic Iron Ore Brief] The domestic ore market in western Liaoning recently saw a slight increase driven by the persistently strong external market. The current ex-factory prices of iron ore concentrates with 66% grade on a wet basis and tax-exclusive rose by 5 yuan to 740-745 yuan/mt. Mines and beneficiation plants were affected by environmental protection and safety inspections, and overall iron ore concentrates resources remained tight. Asking prices were relatively firm. Steel mills and traders

[SMM Stainless Steel Daily Review] Macro Disturbances Dragged SS Futures Lower; Low Inventory Pressure and Rigid Demand Supported Stainless Steel Spot Prices SMM, May 15 — SS futures continued to be in the doldrums. Non-ferrous metal futures extended the previous day's decline, and SS also fluctuated downward in tandem. As of the morning close, the most-traded SS contract was quoted at 14,825 yuan/mt. Spot market side, dragged by the persistently weak SS futures, stainless steel spot prices pulled back in tandem. However, stainless steel social inventory has been on an overall downward trend recently, and traders faced relatively small shipment pressure. Market confidence remained stable, and price declines were relatively limited. The most-traded SS contract fell and pulled back. At 10:15 AM, SS2605 was quoted at 14,890 yuan/mt, down 60 yuan/mt from the previous trading day. Spot premiums for 304/2B in the Wuxi area were in the range of 380-680 yuan/mt. In the spot market, the average price of cold-rolled 201/2B coils in Wuxi remained flat; for cold-rolled untrimmed 304/2B coils, the average price in Wuxi fell 100 yuan/mt, and the average price in Foshan fell 100 yuan/mt; cold-rolled 316L/2B coils in the Wuxi area held steady; hot-rolled 316L/NO.1 coils were quoted stable in Wuxi; cold-rolled 430/2B coils in both Wuxi and Foshan held steady. The stainless steel market was dragged by the weak and volatile futures, with notable downward pressure, but overall spot price declines remained limited, highlighting the divergence between futures and spot. Downstream end-users adopted a cautious wait-and-see stance due to macro uncertainties, with no concentrated restocking observed. However, rigid demand purchases remained solid, and the resilience of rigid demand provided a foundation for spot prices...