Dolomite Filler Powder

Our Industrial grade Ground Calcium Carbonate Powder is processed from natural high-calcium limestone through refined procedures including crushing, grinding and classification, serving as a cost-effective general inorganic filler. Relying on local high-quality limestone ore resources combined with advanced production equipment such as vertical mills and Raymond mills, our factory realizes stable mass production covering full particle size range of 200–800 mesh. The product features stable chemical properties without reactions with common acids and alkalis at normal temperature and excellent thermal stability, meeting basic demands of most industrial filling scenarios. Different from ordinary calcium powder on the market, our Ground Calcium Carbonate Powder strictly controls particle size distribution with extremely low proportion of coarse particles, delivering good dispersibility in systems without local agglomeration or uneven filling. Long-term cooperative construction customers in the Yangtze River Delta feedback that after using our products, product sanding performance and workability are improved by over 15%, and comprehensive raw material costs are reduced by 8%.

As a basic product positioned for general industrial filling, the core value of Ground Calcium Carbonate Powder lies in stable quality and controllable costs. We have established a full-process control system from raw material procurement to finished product delivery. Each batch of products undergoes testing of three core indicators: whiteness, purity and fineness to ensure minimal fluctuation between batches and avoid customers adjusting production formulas due to unstable product quality. Customized particle size and whiteness schemes can be provided for different application scenarios such as construction, plastics and feed, paired with flexible packaging and logistics services. Relying on water transport advantages of Chaohu Port, transportation costs of bulk orders are drastically lowered, making us a cost-effective cooperative choice for overseas purchasers and domestic agents to expand markets.

● Construction Industry: Filler for dry-mixed mortar, putty powder, tile adhesive and other products to enhance system sanding performance and dimensional stability and lower raw material costs.

● Plastic & Rubber Industry: Filling for dark PVC pipes, rubber soles, plastic miscellaneous parts and other products to increase product volume and boost dimensional stability.

● Feed Industry: Calcium supplement for livestock and poultry feed to raise feed calcium content, and also used for adjusting pH value of breeding farm environments.

● Waterproof Material Industry: Filling for mid-to-low grade waterproof coiled materials to increase product volume and structural stability.

We are the largest professional calcium powder manufacturer in Hefei with a factory covering over 20 mu and fully enclosed steel structure production workshops equipped with 6 automated production lines and annual output up to 300,000 tons. We have more than 20 professional technical personnel and an independent R&D and quality inspection team capable of stably supplying full-series calcium-based powder products. The factory is adjacent to container terminals and bulk cargo terminals of Chaohu Port with convenient land and water transportation, capable of undertaking bulk foreign trade orders and guaranteeing stable supply.

We have established a full-process quality control system. Purity of limestone is strictly inspected starting from raw material entry, grinding fineness and classification precision are monitored in real time during production, and 100% full inspection covering core indicators such as whiteness, purity and fineness is implemented before finished product delivery to ensure 100% pass rate of delivered products. We support third-party institutional inspection such as SGS and BV, and factory inspection reports can be provided for each batch of products. The products have passed three major certifications including ISO9001 Quality System, ISO14001 Environmental System and ISO45001 Occupational Health and Safety System, with quality complying with domestic and international industrial filler standards.

Products adopt professional moisture-proof packages with standard specification of 25kg/bag lined with PE moisture-proof film and covered with woven bags externally. Bulk orders can choose 500–1000kg bulk bag packages, and packaging styles and logos can be customized according to customer demands. Transportation supports land transport, water transport, container shipping and other modes. Export products adopt multi-layer anti-seepage packages affixed with international transportation labels such as moisture-proof and drop-proof to guarantee products free of dampness and damage during long-distance transportation.

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