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Changshu Hongyu – a leading supplier of high-content, high-fineness calcium compounds in China. With over 40 years of industry experience, we deliver premium calcium oxide, calcium hydroxide, and nano calcium carbonate to global chemical enterprises.
Changshu Hongyu was founded in 1984 and has since become a leading supplier of calcium products in China. We specialize in producing calcium oxide, calcium hydroxide, and other high-purity calcium compounds with a daily production capacity of 200 tons.
Our products are exported to world-renowned chemical enterprises. We own a mine in Hubei Province and established a new subsidiary in 2023: Carlison New Materials (Jingshan) Co., Ltd., covering 20,000 square meters, focusing on fine chemical, medical, and food-grade calcium products.
We produce high-quality calcium compounds tailored for industrial, chemical, food, pharmaceutical, and environmental applications.
An inorganic compound used as filler, soil amendment, construction material, and in wastewater treatment. High purity and reactivity for diverse industrial applications.
Widely used in bleaching powder production, hard water softening, flue gas desulfurization, and pH regulation.
Ultra-fine particle size for advanced applications in polymers, coatings, adhesives, and medical formulations.
Chemically precipitated for high purity and controlled particle morphology. Ideal for rubber, plastics, and paper.
Mechanically ground from natural limestone. Cost-effective filler for construction materials, paints, and adhesives.
Produced in dedicated clean facilities for use in food additives, dietary supplements, and pharmaceutical excipients.
Enhances brightness, opacity, and printability of paper. Used as filler and coating pigment in high-quality paper.
Used in flue gas desulfurization (FGD), wastewater neutralization, and heavy metal precipitation.
Our calcium-based solutions meet high-tech requirements across multiple sectors.
Used in cement, mortar, steelmaking flux, and desulfurization agents. Enhances strength and durability.
Wastewater treatment, flue gas cleaning, soil stabilization, and acid neutralization.
Raw material for bleaching powder, calcium salts, and organic synthesis.
Calcium fortification, pH adjustment, and as an excipient in tablets.
Soil amendment, pH correction, and animal feed additive.
Extender pigment, improves opacity, and reduces cracking.
As a leading supplier of calcium in China, we provide comprehensive support through our professional sales team, extensive supplier network, and strong market presence.
Dedicated support from inquiry to delivery and after-sales.
Custom formulations and particle size engineering.
Tailored packaging, purity, and physical properties.
Calcium oxide (CaO), or quicklime, is produced by calcining limestone. Calcium hydroxide (Ca(OH)₂), or hydrated lime, is formed when CaO reacts with water. Ca(OH)₂ is less reactive and safer to handle.
Yes. Through our subsidiary Carlison New Materials, we produce food and pharmaceutical-grade calcium oxide and hydroxide that meet international safety standards.
MOQ varies by product and packaging. We accommodate both bulk industrial orders and smaller trial quantities.
Yes. We can customize particle size, purity, moisture content, and packaging based on your application needs.
Our products are exported worldwide, including Europe, North America, Southeast Asia, the Middle East, and Africa.
For product inquiries, technical support, or customization requests, visit our official website to contact us directly.
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