As a comprehensive high-tech enterprise specializing in mining development and chemicals production , we have passed the ISO9001 international quality system certification . Tiandeli Co., Ltd. combined its resources and formed an industry chain including investment , manufacture , transportation , storage , and trading . Tiandeli Co., Ltd. set the headquarters in Tianjin , the economic center in the north of China . Plants are strategically distributed in the northwest of China and middle south of China , Where abundant in mineral resources but consume low cost . Which can insure our clients a competitive price and a first-class quality . After years' of development , our company has been continually growing . Presently , we focus our mainly products on sodium sulphide , sodium hydrosulfide , caustic soda , formic acid , sodium formate and barium sulphate precipitated . Products are selling strongly in the worldwide market , including : Europe, Middle East , South America , South Africa , Southeast Asia and so on . Our products and our services reflect our dedication to excellence . These values bring us good reputation both in domestic and international market . Today our clients choose us for our integrity , our pursuit of high quality , and our commitment to innovation . We believe , Clients and partners around the world will know that they can trust Tiandeli Co., Ltd.