L-tryptophan

Hebei dongdu import and export Co., Ltd. Distribution wholesale propylene glycol, diethylene glycol, glycol, triethylene glycol, white water, PPG, DOP best-selling consumer market, complete varieties, reasonable prices. In the consumer enjoys a higher status, the company with a number of retailers and agents to establish a long-term stable cooperative relations. The company has strong strength, heavy credit, abide by the contract, ensure product quality, with a variety of operating characteristics and the principle of small profits, won the trust of our customers. After several years of development, we have established long-term and stable cooperative relations with many well-known raw material suppliers at home and abroad, and we are the designated distributor of many international chemical companies in China. The company mainly engaged in organic chemical raw materials, solvents, washing, makeup raw materials, printing and dyeing auxiliaries, sewage treatment and so on. We have 15 years of production and export experience. The company in line with the "customer first, quality first" principle, we do our best to meet the various requirements of customers. We have established a strict quality standard inspection system in material procurement, production process and product testing. The quality manager shall conduct standard inspection, including packaging, delivery, shipment, transportation and other links. The pursuit of excellent quality is the core driving force of our development, dedication to customer service is our eternal purpose!