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Demei focuses on the research, development, and production of inorganic iron oxide pigments. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc.
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Product Details
Comprehensive information about our iron oxide pigments including specifications, applications, advantages, and more
Concrete Color Additive Powders
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
Innovating the Admixture Supply Chain
Deqing Demi Pigment Technology Co., Ltd. is the "Pigment Engine" behind many of the world's leading concrete admixture brands. We provide the high-concentration additive powders that allow manufacturers to create superior liquid colors and pre-packaged mortars. Our focus is on providing a "Pure and Predictable" raw material that allows our clients to formulate with precision, knowing that the color will remain stable across different chemical environments.
Color Additive Application Areas
- Liquid Color Systems: Raw materials for automated concrete coloring dispensers.
- Bagged Mortar & Grout: Pre-blended coloring for retail construction products.
- Vertical Stamping: High-adhesion color additives for wall-textured concrete.
- Shotcrete: Durable coloring for sprayed concrete in tunnels and pools.
Additive Grade Technical Specs
| Metric | Value | Standard |
| Particle Size (D50) | 0.5 - 1.2 μm | Laser Measurement |
| Specific Surface Area | 8.0 - 15.0 m²/g | BET Method |
| Water Solubles | < 0.25% | ISO 787-3 |
| Density | 4.6 - 5.1 g/cm³ | ISO 787-10 |
| Chemical Resistance | Grade 5 | Internal Method |
Performance Attributes
- High Concentration: Minimizes the amount of additive needed to reach full shade.
- Chemically Neutral: No interference with water-reducing or strength-enhancing chemicals.
- Rapid Wetting: Disperses in seconds during the high-shear mixing of admixtures.
- Anti-Settling: Particles stay suspended longer in liquid color formulations.
Q: Can these powders be used in high-strength (HPC) concrete?
A: Yes, their high purity and fine particle size make them suitable for the dense matrices of high-performance concrete.
Q: Are they compatible with polycarboxylate (PCE) plasticizers?
A: Yes, our additive grade is specifically tested for compatibility with the latest PCE technologies.
Custom Formulation Partnership
We work with admixture companies to develop "Exclusive Tones" or specific performance characteristics (like improved flow) for their proprietary liquid color lines.
Bulk Density Optimization: We can provide the powder in specific densities to match your pneumatic dosing equipment, reducing the risk of clogging or uneven feed rates.
The Science of Pigment-Additive Synergy
In color additives, the "Interfacial Tension" between the pigment and the liquid medium (or concrete mix) is critical. We optimize our powders to ensure a low "Contact Angle," which facilitates rapid dispersion. By controlling the "Microporosity" of the pigment particles, we ensure they don't absorb valuable liquid chemicals (like plasticizers), making your overall concrete mix more efficient and cost-effective while maintaining a vibrant, uniform color.
About Demei
Demei Chemical Co., Ltd. specializes in the research, development, and production of inorganic iron oxide pigments. With over a decade of experience in the field, we have established ourselves as a leading manufacturer with advanced production facilities and a dedicated R&D team.
We are China Custom Concrete Color Additive Powders Manufacturers and Wholesale Concrete Color Additive Powders Suppliers, Factory. Our comprehensive pigment range includes iron oxide red, yellow, black, brown, green, orange, and blue. We produce high-performance and high-stability composite iron oxide pigments with three specialized series: Standard, Micronized, and Low Heavy Metal Content levels.
Our products are exported to more than 30 countries and regions worldwide, serving diverse industries including construction, coatings, plastics, rubber, ceramics, and paper. We pride ourselves on consistent quality, excellent color properties, and reliable technical support for our global clients.
R&D Excellence
Continuous investment in research and development ensures technological leadership. Our R&D center focuses on innovative pigment formulations and application technologies.
Advanced Manufacturing
State-of-the-art production facilities with automated control systems ensure consistent quality and large-scale production capacity of over 50,000 tons annually.
Quality Assurance
Strict quality control at every production stage. Certified to ISO 9001:2015, our pigments meet international standards for color consistency and performance.
Global Reach
Extensive distribution network across Asia, Europe, Americas, and Africa. We provide customized solutions and technical support for diverse market requirements.
Core Products
We provide a full range of high-quality inorganic iron oxide pigments, widely used in building materials, coatings, plastics, rubber, ceramics and other industries.
Product Series
We offer three specialized series of iron oxide pigments to meet diverse industry requirements and application scenarios
Standard Series
Conventional particle size iron oxide pigments suitable for most industrial applications. Excellent dispersibility and tinting strength with high cost-performance ratio.
Micronized Series
Ultra-fine particle size with uniform distribution. Ideal for high-end coatings, plastics, and applications requiring superior fineness and smooth finish.
Low Heavy Metal Series
Strictly controlled heavy metal content meeting international environmental standards. Suitable for toys, food packaging, and safety-sensitive applications.
Social Responsibility
Demei not only contributes to production and operation, but also faithfully fulfills its social responsibilities, protects the ecological environment, strengthens safe production, and cares for the health of employees.
Environmental Protection
Implementing green production processes, reducing waste emissions, and actively promoting circular economy principles.
Safe Production
Comprehensive safety management system ensuring controlled and secure operations throughout the production process.
Employee Health
Providing healthy working environments, regular health check-ups, and focusing on physical and mental well-being of our employees.
Community Contribution
Active participation in community development, supporting educational initiatives, and giving back to society.
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Phone
86-572-8035379
86-13666526593 -
Hours
Monday-Friday: 9am to 6pm
Saturday, Sunday: Closed -
Address
20th Floor, Mibei Chuanggongchang No. 650 Yunxiu South Road, Deqing County, Huzhou City, Zhejiang Province, China(Sales Office)
