How does zinc sulphate demand split across feed, fertilizer, and aquaculture in China?
Zinc sulphate serves multiple end-markets with distinct quality tiers. In human nutrition, it provides about 23% elemental zinc, commonly used in supplements for deficiency, diarrhea management, and hair loss reversal—clinical cases show 60–600 mg daily can restore normal growth within months. In aquaculture, heptahydrate zinc sulphate is a standard antiparasitic, dosed at 0.75–1.0 g per cubic meter for treatment, prized for safety on shrimp and crabs versus copper sulphate. Feed-grade zinc is the largest volume driver, tied to livestock health and growth promotion. Agricultural grades also support fertilizer micronutrient blends. Demand is relatively stable but price-sensitive, with Hebei producers competing on cost. Regulatory shifts—such as stricter heavy metal limits in feed additives—are pushing buyers toward higher-purity grades, benefiting integrated producers who control purification steps.
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