Import Decrolin (Zinc Formaldehyde Sulfoxylate) — Buy in Bulk from Supplier in Hong Kong

Decrolin is zinc formaldehyde sulfoxylate, a discharge agent used in textile printing to remove color from dyed synthetic fabrics, enabling high-contrast white designs. The product is supplied as a fine, off-white powder with a purity level consistent with industrial textile processing standards. It is stable under controlled pH conditions and dissolves readily in water-based printing pastes at temperatures between 30°C and 45°C.

This compound is typically formulated at concentrations between 5% and 15% in discharge pastes for use on polyester, nylon, and other synthetic fibers. Its chemical structure allows selective reduction of vat and reactive dyes without damaging the fiber substrate, preserving fabric hand feel and tensile strength. Standard industry practice requires its use with alkaline activators such as sodium bicarbonate to initiate the discharge reaction during steaming or curing.

Buyers in the garment and home textile sectors use Decrolin for fashion prints, sportswear, and promotional textiles requiring crisp white motifs on dark backgrounds. It is commonly sourced in 25 kg polyethylene-lined bags, with typical minimum order quantities ranging from 100 kg to 500 kg depending on formulation compatibility. Trade terms are usually FOB Hong Kong, with lead times of 7 to 14 days after order confirmation. Buyers should verify compatibility with their dye systems before bulk procurement.

Yat Sun Dyestuffs & Chemicals Co., Ltd. is a Hong Kong-based supplier of textile auxiliaries and chemical intermediates, operating from a registered industrial address in Tsuen Wan. The company is listed as an imported supplier with harbor-level trust signals, indicating verified export documentation and compliance with Hong Kong customs procedures. No public records confirm manufacturing capacity, laboratory certification, or in-house R&D activity.

The listing does not state whether Yat Sun produces Decrolin in-house or acts as a distributor. There is no information on workforce size, years in operation, or client names. The absence of response rate or average reply time suggests limited direct buyer engagement. Buyers should treat this as a trade intermediary and verify product origin and batch consistency through independent testing before large-scale orders.