HN Langyue Biotech Co., Ltd. is a high-tech chemical enterprise specializing in the research, development, production, management and sales of fine chemicals, food additives, pharmaceutical raw materials and intermediates. The company is headquartered in Changsha, Hunan Province. The company has two factories, one of which is located in Changsha, Hunan Province to produce botanical extracts and fermented products. Other one is in Suzhou, Anhui Province mainly producing chemical products.Our company has perfect quality assurance system and mature quality control system, have multiple sets of high-pressure liquid chromatograph, gas chromatograph and uv spectrophotometer, such as high efficient sensitivity analysis instruments. In view of the product from raw material to the finished product for effective analysis and monitoring, ensure the quality in strict accordance with the pharmacopoeia standards, to meet the needs of different customers around the world!
PQQ，全名4，5-二氢-4，5二氧-1-氢并(2，3-f)喹啉-2，7，9-三羧酸，又名喹啉醌(pyrroloquinoline quineone, PQQ)，是由革兰氏阴性菌产生的，对微生物、动植物具有广泛营养作用，并具备抗氧化性的营养元素。
