Zinc's Two-Speed Market: China Surplus vs Ex-China Deficit

The global zinc market is no longer a single integrated pool. A growing regional bifurcation is creating two fundamentally different dynamics: China operates in persistent surplus, while markets everywhere else face a widening structural deficit. This schism is reshaping trade flows, pricing benchmarks, and risk assessments for buyers and sellers alike.

China's surplus is the product of aggressive smelter capacity additions. Over the past three years, Chinese zinc smelters have expanded at a pace that domestic mine supply cannot match. The result is a growing overhang of refined metal, parts of which are now being directed toward LME warehouses — a development that has injected downward pressure into the global benchmark while obscuring the acute tightness felt in the US, Europe, and other consuming regions outside China.

Outside China, the picture is one of deepening scarcity. Mine closures, permitting delays, and chronic underinvestment have constrained concentrate and refined metal availability. The South32 Taylor project in Arizona — one of the few major new zinc mines in development — has been pushed back to the first half of 2028, eliminating a key source of anticipated ex-China supply growth. Without new mines coming online, the non-Chinese market will remain structurally dependent on Chinese exports to balance its books.

This two-speed structure carries significant implications. Physical premiums in ex-China markets may decouple to reflect local tightness even as LME prices remain capped by Chinese surplus flows. The arbitrage window between Shanghai and London will determine how rapidly Chinese metal rebalances global markets — and whether the rest of the world can rely on China's surplus as a reliable pressure valve.

The market's center of gravity is shifting. For the foreseeable future, understanding zinc means understanding the flow of Chinese metal into a world that cannot produce enough on its own.