Product Introduction
This specially refined calcium hydroxide powder is exclusively formulated for the coatings industry. Produced from premium raw materials through rigorous calcination, meticulous grinding, and purification processes, its key specifications meet the stringent requirements of high-end coating production.
With high purity, ultra-fine particle size, and excellent whiteness, coupled with minimal impurities, this product seamlessly integrates into coating systems. It elevates coating quality and service life, serving as an ideal raw material for interior coatings, exterior coatings, putty powder, art coatings, anti-corrosion coatings, and more.
The core parameters
| Inspection Item | Standard Requirement | Actual Test Result |
| Purity of Calcium Hydroxide | ≥96% | 96%-98% |
| Powder Fineness | ≥850 Mesh | 850-1250 Mesh |
| Powder Whiteness | ≥90 | 93 |
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Packaging & Storage
Packaging Specifications
25kg/bag (coated woven bag, moisture-proof and anti-caking), 1000kg/bag.
Storage Conditions
Store in a cool, dry, ventilated and clean warehouse in a sealed state, away from fire, heat sources and acidic substances. Protect from moisture and rain. The stacking height shall not exceed 10 layers to avoid caking caused by extrusion.
Shelf Life
12 months (under the specified storage conditions)
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Company Profile
Changshu Hongyu Calcium Co., Ltd. was founded in 1984. The company has always been focused on the research, development and production of three major series of products: calcium oxide, calcium hydroxide and calcium carbonate, with a daily output of 600 tons. After more than 40 years of professional accumulation, relying on advanced production technology and strict quality control, the company has accumulated rich production experience. Our products are of high purity and low impurity, and are widely used in various fields such as chemical industry, environmental protection, agriculture and construction. With high-quality products and a good market reputation, our products are not only favored in the domestic market, but also exported to well-known enterprises in Southeast Asia, the Middle East, Africa and other regions, becoming a trusted choice for many international customers.
We have our own mine in Hubei Province, and in 2024, we invested to establish a new company: Carlison New Materials (Jingshan) Co.,Ltd., which covers an area of 40,000 square meters. The new company specializes in the production of fine chemical, pharmaceutical and food-grade calcium oxide and calcium hydroxide products. Changshu Hongyu will continue to adhere to the concept of innovation, quality and service, constantly enhance its competitiveness, provide high-quality calcium compound products and services for more industries, and work with all sectors to create a better future.
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Certifications
Product Photos
Product Advantage
✅ High Purity: ≥96% with ultra-low impurities and stable performance
✅ Excellent Fineness: ≥850 mesh ultra-fine powder, good dispersibility and easy processing
✅ Superior Whiteness: ≥93 high whiteness with strong hiding power, optimizing costs and efficiency
✅ Wide Applications: Compatible with various coatings, environmentally friendly and superior quality
✅ Strict Quality Control: Stable batch quality, inspected and qualified, with reliable after-sales service
Main Application Areas
1. Architectural Coatings
Widely used in interior latex paints, exterior waterproof paints, stone-like paints, textured coatings, etc. It enhances coating adhesion, weather resistance, and scrub resistance, increases wall hardness, and prevents wall efflorescence, mold, and cracking. Suitable for various architectural coatings in residences, office buildings, shopping malls, and more.
2. Putty Powder / Leveling Materials
As a core raw material for putty powder, it enhances the bonding strength, fineness, and whiteness of putty, ensuring smoother wall leveling and easier subsequent coating application. It reduces issues like hollowing and cracking, improving the overall decoration effect.
3. Art Coatings
Compatible with lime-based art coatings, microcement, Wabi-sabi style coatings, etc. It creates matte, textured wall surfaces with good air permeability, moisture, and mildew resistance, perfect for high-end home stays, villas, art galleries, and other venues.
Production Workshops
Our Advantages
We have our own mine in Hubei Province, which endows us with the following advantages:
Stable Raw Material Supply: Owning our own mine ensures a stable supply of raw materials for calcified substances. This helps to avoid production interruptions caused by issues such as fluctuations in the raw material market and supply shortages. It guarantees the smooth progress of production plans and maintains a stable product output, enabling us to better meet customer needs and enhance customer satisfaction.
Controllable Raw Material Quality: Our company can directly manage and monitor the mining process of the mine, and strictly control the quality of raw materials. We are able to select appropriate ore grades and qualities according to production requirements, ensuring that the mined ore meets the high standards of our products. This provides a solid foundation for producing high-quality calcified substance products and helps to enhance the market competitiveness of our products.
Cost Advantage: Obtaining raw materials from our own mine reduces intermediate procurement links and lowers procurement costs. Moreover, in the long run, a stable raw material supply also enables our company to take the initiative in cost control and avoid the risk of cost increases due to fluctuations in raw material prices, thereby improving the company's economic benefits and profitability.
FAQ
Q: Are you a trading company or a factory?
A: We are a factory.
Q: What are your main products?
A: Calcium oxide, Calcium hydroxide, Light calcium carbonate, Heavy calcium carbonate，Nano calcium carbonate
Q: Are samples free? How long is delivery?
A: 5–10kg samples are free (freight negotiable). Regular stock delivered within 48 hours; customized orders in 7–15 days.
Q: Where is your factory?
A: Our factory is located in Changshu, Jiangsu Province, welcome to visit us at any time.
Q: Is there any possible to use my appointed lable or package?
A: Yes, If need, we would like to use lable or package according to your requirement.
Q: How do I contact you to purchase a product?
A: Below is our contact information, please feel free to contact us at any time.
Contact ：Mr. zhou
Phone/Wechat:15250326132
Skype: lousong1030
Email: zhou@cshyghw.com
