About DJX Refractory Materials Co.,Ltd - Chemicals & Allied Products Supplier in China

Based in China, DJX Refractory Materials Co.,Ltd lists five active products. The company is classified under the Chemicals & Allied Products category. Its catalogue includes brown aluminium oxide, white aluminium oxide, vice‑white corundum, black silicon carbide and green silicon carbide. The three aluminium‑oxide products fall under HS chapter 28, code 2818.10, and are described as brown fused alumina (Al2O3 94‑96 %), white fused alumina (Al2O3), and vice‑white corundum (Al2O3 99.5 %). Both silicon‑carbide products are listed with HS code 2849.20, identified as black SiC and green SiC with 97‑99 % purity.

These materials are commonly used in refractory linings, abrasive media and high‑temperature ceramics. The brown fused alumina’s Al2O3 content of 94‑96 % positions it for grinding and polishing applications where moderate hardness is required. Vice‑white corundum at 99.5 % Al2O3 meets the higher purity standards for precision abrasive and optical polishing. Black silicon carbide, while not specifying purity, is typically employed in thermal conductivity and wear‑resistant components. Green silicon carbide’s 97‑99 % purity aligns with specifications for high‑performance cutting tools and electronic substrates.

Product Range and Specialties of DJX Refractory Materials Co.,Ltd

DJX’s product range comprises five items: brown fused alumina (Al2O3 94‑96 %), white fused alumina (Al2O3), vice‑white corundum (Al2O3 99.5 %), black silicon carbide, and green silicon carbide (97‑99 % purity). In the fused alumina market, grades are often classified by Al2O3 content, with 94‑96 % used for standard abrasive grains and 99.5 % for super‑fine polishing. Typical particle‑size distributions range from 40 µm to 200 µm, and manufacturers may provide bulk density around 2.6 g/cm³ and moisture content below 0.5 %. Silicon carbide grades are distinguished by purity, crystal size and colour; black SiC is generally a lower‑purity bulk material, while green SiC with 97‑99 % purity is marketed for high‑precision grinding and semiconductor substrates. Standard specifications for SiC include bulk density near 3.2 g/cm³, hardness of 9.5 Mohs and thermal conductivity above 120 W/m·K.

Trade and Export Information - DJX Refractory Materials Co.,Ltd

China is one of the world’s largest exporters of fused alumina and silicon carbide, supplying Europe, North America and Southeast Asia. The HS code 2818.10 covers aluminium‑oxide products, which are subject to customs duties that vary by destination but often benefit from preferential trade agreements within the Asian - European corridor. For silicon carbide, HS 2849.20 is classified under ceramic products, and importers frequently require compliance with REACH, ISO 9001 quality management and material safety data sheets. Typical export logistics involve bulk bagging (25 kg or 1 ton jumbo bags) loaded into 20 ft or 40 ft containers, with FOB Shanghai or Ningbo as common Incoterms.

Buyers in the automotive, electronics and metal‑finishing sectors commonly import these materials for abrasive grinding wheels, refractory linings and semiconductor wafers. Regulatory checks often include verification of purity certificates, particle‑size analysis reports and, where applicable, environmental compliance such as RoHS for silicon carbide used in electronics. Chinese export procedures require customs declaration with accurate HS codes and may involve inspections by the General Administration of Customs for high‑purity grades.

Sourcing from DJX Refractory Materials Co.,Ltd - Buyer Guidance

When sourcing from DJX, buyers should request a recent laboratory analysis confirming Al2O3 or SiC purity, along with particle‑size distribution and bulk‑density data. A Material Safety Data Sheet (MSDS) and any applicable REACH or RoHS compliance certificates should be obtained before finalizing the order. It is advisable to verify that the HS code on the commercial invoice matches the product description (2818.10 for alumina, 2849.20 for silicon carbide) to avoid customs delays.

Samples of the fused alumina and silicon carbide can be requested in 500 g quantities to assess grinding performance and thermal stability. Confirm packaging details - whether bulk bags or containerised pallets - and ensure that moisture‑barrier liners are used for long‑haul shipments. Clarify lead time, typical minimum order quantity (often one metric ton or one container) and the preferred Incoterm, such as FOB Shanghai, to align logistics.

What aluminium‑oxide products does DJX supply?

DJX lists brown fused alumina (Al2O3 94‑96 %), white fused alumina (Al2O3) and vice‑white corundum (Al2O3 99.5 %). All three are classified under HS code 2818.10 and are used for abrasive and refractory applications.

What grades of silicon carbide are available?

The catalogue includes black silicon carbide (purity not specified) and green silicon carbide with 97‑99 % purity. Both fall under HS code 2849.20 and are typical for wear‑resistant and high‑temperature uses.

Which certifications should a buyer request for these materials?

Buyers normally ask for ISO 9001 quality‑management certification, ISO 14001 environmental compliance, REACH registration where required, and a current Material Safety Data Sheet. Purity test reports and particle‑size analysis are also standard.

How are the products usually packaged for export?

Fused alumina and silicon carbide are commonly packed in 25 kg bulk bags or 1 ton jumbo bags, placed on pallets for 20 ft or 40 ft container loading. Moisture‑barrier liners are employed to preserve material quality during sea transit.

What is the typical minimum order quantity?

Exporters of fused alumina and silicon carbide often set a minimum order of one metric ton or one full container load. Specific MOQ should be confirmed with the supplier for each grade.

What lead time can buyers expect?

After order confirmation and receipt of required documents, production and preparation for shipment usually require 30 to 45 days. Lead time may vary with order size and purity specifications.

Which markets import these Chinese refractory materials?

Major importers include the European Union (Germany, Italy), the United States, Japan and South Korea. These regions use the materials in metal‑finishing, ceramic manufacturing and electronic component production.