Hangzhou Hengrui Biological Products Co.,Ltd. was founded in 2001. It is located at the east bank of Qiantang River, enjoying convenient transportation. Now, the company covers an area of 1500 square meters and has more than 30 employees. Our company has powerful technology force(the research and development of products are mainly charged by Zhejiang University) and complete supporting facilities of public works. Moreover, we adopt imported apparatus to test our products, which meets the clients' quality requirements of high purity and high standard.

Our company is the unique manufacturer of tryptophan in Zhejiang province. Tryptophan is a kind of heterocyclic amino acid necessary to human body, widely used in pharmaceutical and food field, marketable and promising. At present, our main products include: D-tryptophan, DL-tryptophan and L-tryptophan, with the monthly output of about 1 ton and the annual output value of more than 30 million yuan.

High efficiency, high credit and clients' demands as top priority is our management philosophy. With the first-class service, we warmly welcome all friends from home and abroad to visit, negotiate and cooperate with us!