China’s Calcium Sulphate market moved slightly higher in June 2026, with FOB Shanghai values rising 1.40% month on month as producers resisted discounting amid tighter conversion economics. Early in the month, higher sulphuric acid costs and inland rail constraints reduced prompt export availability, which helped support firmer pricing. Technical grade Calcium Sulphate suppliers focused on protecting margins rather than chasing volume, and overall Calcium Sulphate sentiment improved as regional enquiries became steadier. The monthly increase reflected disciplined selling conditions more than any sharp jump in downstream demand.
Demand for Calcium Sulphate remained mixed but broadly stable across major end-use segments. Construction-linked Calcium Sulphate consumption from cement, plasterboard, and prefabricated materials producers stayed consistent, preventing inventory accumulation at coastal warehouses. Utility demand for synthetic Calcium Sulphate also provided a steady floor to the market, as regular procurement patterns continued through the month. However, specialised Calcium Sulphate demand from food and pharmaceutical applications remained soft and had little impact on mainstream pricing. Export enquiries for Calcium Sulphate from India and Indonesia improved by mid-June as buyers secured cargoes ahead of seasonal logistics disruptions, which lent further support to market sentiment.
Supply-side factors kept Calcium Sulphate prices firm. A 12.81% month-on-month rise in sulphuric acid values increased processing costs for synthetic gypsum producers and narrowed operating margins. Producers therefore held higher offers instead of cutting prices, while rail constraints from inland producing regions slowed flows to the coast and tightened prompt availability. These conditions translated into firmer Calcium Sulphate export negotiations and reduced the need for discounts. At the same time, coastal Calcium Sulphate inventories remained manageable, and no major plant shutdowns were reported that would significantly alter capacity balances.
Looking ahead, the Calcium Sulphate outlook points to modest gains through the third quarter, supported by continued cost pressure, steady domestic construction demand, and pre-season export buying. Even so, the market is unlikely to surge unless downstream consumption improves more clearly. Analysts expect current Calcium Sulphate firmness to persist into July-September, while year-end destocking, holiday slowdowns, or easing raw material pressure could limit further upside.
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