we  introduce ourself as new manufacturer of p-tert butyl benzoic acid, methy p-tert-butyl benzoate, sodium sulphide , from china, our products include sodium sulphide red flake, yellow flake, crystalline sodium sulphide pentahydrate, with annually capacity of 100000 metric tons,with high strick quality management system,  all this products have been selled to south asia, middle east countries, we also been ISO certificated, sodium sulphide is widely used in leather industrials, floating agent in mining, plastic ,pharmacy industrials, and we have good experienc and relations with our clients from overseass and dosmetics for many years,  and we expect mututal benefits , longterm cooperation with you. more details ,please contact with us 3w dot taihuaind dot com