Tianjin Dongda Chemical Industrial Co,xxxxx a specialized foodstuff and chimical enterprise,com-bing scientific rescarch and technical development with production and sales of product xxxxx company is lcocated in the Chemical Area of Tian-jin Economic Development Area and close to Tianjin xxxxx,it devotes itself to improving the quali-ryof products steadily,lowering the cost of produ-products and perfecting the after-sale system con-tinuously by taking the demand in the market as the guidance