Located in the Industrial Zone of Lijia Town, Jiande City—known as the 'Hometown of Calcium Carbonate in China'—Hangzhou Hongxin Calcium Industry Co., Ltd. is a National High-tech Enterprise specializing in the R&D, production, and sales of calcium hydroxide and calcium oxide. With extensive experience in inorganic salt materials, the company has established itself as a key player and leading manufacturer in the national industry.

Core product system
Our Core Product Portfolio:Ultrafine High-Purity calcium hydroxide, Refined calcium hydroxide, Eco-friendly calcium hydroxide, and common calcium hydroxide; Superfine calcium oxide, Industrial Calcium oxide, Refined Calcium oxide; and Heavy Calcium Carbonate‌, etc.
We offer a comprehensive range of specifications to meet diverse industrial needs. Beyond our standard offerings, we provide fully customized solutions tailored to specific customer requirements, demonstrating our unwavering commitment to service excellence.

Product Applications & Solutions:

        ▲ Flue gas desulfurization and denitrification: used for the treatment of exhaust gas in power plants and industrial boilers, effectively neutralizing acid gases and reducing SO₂ emissions.
        ▲ Sewage treatment: adjust the pH value, promote heavy metal precipitation, and improve the water quality compliance rate
        ▲ Solid waste and hazardous waste treatment: Stabilize the treatment of hazardous substances and improve the level of environmental protection and safety.
        ▲ Building materials industry: As a functional additive, it improves the strength and stability of materials.
        ▲ Metallurgical and chemical production: used for desulfurization, fluxing and neutralization reactions to improve production efficiency.

Through high purity and high activity control, the company's products help customers achieve environmental protection standards, cost optimization and process stability.
 

• Large-scale manufacturing capabilities

   

  Equipped with large-scale automated calcination kilns and imported calcium hydroxide digestion systems, the company has established an annual production capacity of 350,000 tons of calcium hydroxide and 200,000 tons of calcium oxide. This robust infrastructure ensures our ability to provide a continuous, stable, and large-scale supply to meet market demands.

• Technology research and development strength

   

  The company operates a Hangzhou Municipal Enterprise High-tech R&D Center. Our strong innovation capability is evidenced by 27 authorized patents (including 4 invention patents) and our active role in co-drafting two industry standards and one group standard. These achievements underscore our commitment to continuous innovation in process optimization and product performance enhancement.

• Industry status and authoritative recognition

   

  Honored as a National High-tech Enterprise, the company has also been designated a 'Specialized and Sophisticated' SME by Zhejiang Province. Furthermore, it holds an AAA rating for contract observance and creditworthiness, underscoring our commitment to integrity. It has a strong industry influence in the calcium hydroxide and calcium oxide sub-sectors.

• Quality management and credit system

   

  With ISO 9001 certification, we operate a end-to-end quality system covering sourcing, manufacturing, and testing to guarantee 100% product conformity upon delivery. Backed by sound governance and standardized credit practices, we offer our clients assured stability for long-term collaboration.

• Resource advantages and sustainable development

   

  Leveraging the high-quality limestone resources of the Jiande region, the company has secured a stable mineral supply, implemented strict impurity control, and established full quality traceability. We remain committed to providing premium calcium-based material solutions for environmental protection and industrial manufacturing.