Wellchem is the leading halgoen free flame retardant producer in China with ISO9001. Our main product is Ammoniun Polyphospahte(phase II, N>1000), including standard APP, melamine reacted APP, Melamine coated APP, silicon coated APP,and finer APP. Also, we produce Monopentaerythritol, Dipentaerythritol and melamine to satisfy the customers who produce flame retardant coating.