Guangzhou Yang Qing Chemical Co., Ltd. Distribution of propylene glycol, glycerin, triethanolamine, AES, AOS variety, reasonable prices. Guangzhou Yang Qing Chemical Co., strength, credit, keep the contract, to ensure product quality, variety principles of operating characteristics and puerile, and win the trust of our customers. Main: Dow propylene glycol, SKC propylene glycol models currently 1, 3-PDO production methods are three kinds: the industrialization of the United States in 1996 Shell's ethylene oxide carbonylation; in 1995 the successful development of the German company Degussa propylene aldehyde hydration hydrogenation; and Dupont companies in the United States on behalf of bioengineering method. Recently it was suggested to formaldehyde as a raw material for preparing 1,3-PDO propanediol, Prins reaction or by aldol condensation. Several synthesis process and above will be introduced in detail the progress of this chapter, Guangzhou Yang Qing Chemical Co., Ltd. Distribution of propylene glycol, glycerin, triethanolamine, AES, AOS variety, reasonable prices. Guangzhou Yang Qing Chemical Co., strength, credit, keep the contract, to ensure product quality, variety principles of operating characteristics and puerile, and win the trust of our customers. Main: Dow propylene glycol, SKC glycol professor at Tsinghua University Institute of Applied Chemistry Andy Lau, in recent years has invented a exogenously added fumaric promote microbial synthesis of 1,3-propanediol propanediol food grade, suitable for 1 1,3-propanediol anaerobic and aerobic fermentation process, its advantages: can accelerate the use of bacterial glycerol, 1,3-propanediol significantly increase concentration and intensity of production, reduce production costs. For 1,3-propanediol during fermentation byproducts features a relatively large amount of organic acid (salt), they will be the first electrodialysis desalination technology into 1,3-propanediol extraction process at the international level, and through flocculation, concentration and distillation, etc. process, the product purity of 99.92%, yield 80%. Wherein the test product in Yizheng Chemical Fiber, Liaoyang Petrochemical, and other units to try propylene glycol action with 1,3-propanediol polymerization of PTT imported from abroad compared, results showed Tsinghua biological product of 1,3-propanediol pilot polymerization of PTT The intrinsic viscosity, color and other key technical indicators over the imported products. Shantou glycol, propylene glycol levels, Yang Qing Chemical (quality businessmen) are provided by Jan-Chemical Co., Ltd. in Guangzhou. Road Zhiyuan, temper forward. Guangzhou Yang Qing Chemical Co., Ltd. (www.gzyangqing.com) (www.gzyangqing.com) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential agents of chemical products business, and You leap together, succeed together!