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China Guangzhou Hongzheng Trade Co., Ltd. certification
China Guangzhou Hongzheng Trade Co., Ltd. certification
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Our company have been cooperating with Hongzheng for 5 years, their service is good and the staffs are stable. Mr.Lam has served me for 5 years, we are like friends. We mainly purchasing calcium chloride dihydrate, it has very good performance on rubber glove industry. Worth working with them.

—— Tomo Visava

Hereby, we confirm that the quality of anhydrous ferric chloride barreled one is good. Thank you for all your suggestion, also good after sales service.

—— Syed Avais Ali

Under here with, we'd like to certified that anhydrous sodium sulfate of 500 tons supplied in 2020, works so well in textile and dyeing industry.

—— Torikul Zaman

Very appreciate for your professional service & very happy to know you. We trust the quality of your products. It always the best. Keep this going, and we will establish a long-term trade relationship with you.

—— Bill

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96 purity paraformaldehyde powder online manufacture

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buy PFA Paraformaldehyde 96%min White granular solid powder Class 4.1 online manufacturer

PFA Paraformaldehyde 96%min White granular solid powder Class 4.1

Product Description:PARAFORMALDEHYDE PFA is a chemical compound classified under Class 4.1, known for its versatile applications in various industries. With a chemical formula of HO(CH2-O)xH and a CAS number of ... Read More
2025-11-13 10:45:56
buy Polyoxymethylene PFA Paraformaldehyde Solubility Slightly Soluble In Water Class 4.1 online manufacturer

Polyoxymethylene PFA Paraformaldehyde Solubility Slightly Soluble In Water Class 4.1

Product Description: PARAFORMALDEHYDE 96%min is a high-purity product that is widely used in various industrial applications. With a purity level of at least 96%, this product ensures high quality and reliable ... Read More
2025-11-13 11:19:58
buy Paraformaldehyde pFA Polyoxymethylene 96%Min UN No. 2213 online manufacturer

Paraformaldehyde pFA Polyoxymethylene 96%Min UN No. 2213

Product Description: Paraformaldehyde is the solid, polymeric form of formaldehyde. It appears as a white, crystalline powder or flake with a strong, pungent odor reminiscent of formaldehyde. Unlike formaldehyd... Read More
2025-11-13 10:57:38
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