About Zhangencong - Chemicals & Allied Products Supplier in China

China lists six chemical products from Zhangencong, all falling under the Chemicals & Allied Products segment. The catalogue includes Magnesium Oxide, Chrome Oxide, Chrome Oxide Green, Sodium Dichromate, Chromic Acid and Potassium Bichromate, each identified by its standard HS‑code family such as 2505 for magnesium compounds and 2825 for chromium oxides. The supplier’s active product count of six reflects a focused portfolio rather than a broad‑line offering. Product titles are provided without additional specifications, allowing buyers to request detailed technical data directly from the supplier.

Product Range and Specialties of Zhangencong

The listed products cover basic inorganic oxides and chromate compounds. In the global market, Magnesium Oxide is commonly supplied at purity levels of 97‑99.5 % and particle sizes ranging from 1 µm to 10 µm, while Chrome Oxide (basic chromium sulfate) is typically offered in grades of 50 % to 65 % Cr₂O₃ content. Chrome Oxide Green, a pigment grade, is usually graded by colour index and purity above 95 % Cr₂O₃. Sodium Dichromate and Potassium Bichromate are sold in crystalline form with typical moisture contents below 5 % and standard packaging of 25 kg bags. Chromic Acid is generally supplied as a 30‑35 % aqueous solution, measured by weight, and conforms to industrial safety standards for handling hazardous acids.

Trade and Export Information - Zhangencong

Exporters of inorganic oxides and chromates from China mainly serve Southeast Asian metal‑finishing plants, European pigment manufacturers and North American chemical processors. HS chapter 28 (Inorganic chemicals) governs most of these items; for example, Magnesium Oxide falls under 2505, Chrome Oxide under 2825, Sodium Dichromate under 2815, and Potassium Bichromate under 2815 as well. Typical import requirements include a valid Material Safety Data Sheet (MSDS), REACH registration for the European Union, and a Certificate of Analysis (CoA) confirming purity and moisture levels. Shipping is frequently arranged in 20‑ft or 40‑ft containers with bulk bagging, using CIF or FOB terms, and customs inspections often focus on hazardous‑material declarations and compliance with local environmental regulations.

Sourcing from Zhangencong - Buyer Guidance

When sourcing from Zhangencong, buyers should request the latest CoA, MSDS and any REACH or ISO‑9001 certificates that the supplier can provide. Verify that the purity, particle size distribution and moisture content match the specifications required for the intended application, and confirm packaging details such as 25 kg bulk bags or drums for liquids. It is advisable to obtain a sample for laboratory testing before confirming a full order, and to clarify the accepted Incoterms, lead time and any required pre‑shipment inspections.

What HS codes apply to the chemicals listed by Zhangencong?

Typical HS codes are 2505 for Magnesium Oxide, 2825 for Chrome Oxide and Chrome Oxide Green, 2815 for Sodium Dichromate, Potassium Bichromate and Chromic Acid. The exact code may vary slightly with product form and concentration.

Which certifications should a buyer request for these chemical products?

Buyers should ask for a current Material Safety Data Sheet, a Certificate of Analysis, and any REACH registration or ISO‑9001 quality system certificates that the supplier can supply.

What are the common purity grades for Magnesium Oxide and Chrome Oxide?

Magnesium Oxide is usually offered at 97 %‑99.5 % purity, while Chrome Oxide grades commonly range from 50 % to 65 % Cr₂O₃ content for industrial use and above 95 % for pigment applications.

How are liquid chromic acid products typically packaged for export?

Chromic Acid solutions are generally packed in steel drums of 200 L or 500 L capacity, with appropriate hazard labeling and sealed to prevent leakage during sea transport.

What minimum order quantities are typical for these chemicals?

Inorganic chemicals from China are often sold in multiples of 25 kg bulk bags for solids and in full‑drum shipments for liquids; the exact MOQ depends on the product and packaging agreement.

What lead times can a buyer expect for these products?

Lead times usually range from 2 weeks to 4 weeks after order confirmation, depending on production scheduling, hazardous‑material documentation and container availability.

Are there any special shipping restrictions for chromate compounds?

Chromate compounds are classified as hazardous substances, requiring UN number labeling, proper segregation in containers, and compliance with the International Maritime Dangerous Goods (IMDG) Code during sea freight.

What documentation is needed for customs clearance of these chemicals?

Customs typically require a commercial invoice, packing list, MSDS, CoA, and any applicable REACH or import permits, along with the correct HS code declaration.