Ningbo Jinzhan Biotechnology Co.,Ltd(Formerly named Ninghai Organic Chemical Factory,was founded in 1989),is located in Xidian Town Industrial Zone, Ningbo City, Zhejiang Province,China.In response to the development needs of the company, the company was upgraded from a sole proprietorship enterprise to an enterprise in May 2019，The business scope and business address have not changed . It is a major manufacturer and worldwide supplier of high quality tartaric acid and its derivatives. The main products are: L(+)-Tartaric acid; DL-Tartaric acid and D-tartaric acid and it salts。 The quality management system of the company is in compliance with ISO9001 and ISO22000, not only having achieved the certificate from Star-K Kosher and Ifanca Halal, but also having the nationwide industrial production license (SC) for tartaric acid and potassium hydrogen tartrate(also called cream of tartar). The products from the company conform to many international standard such as BP, USP, FCC, JP standards, as well as Domestic National Standard.