Zhongshi Duqing (Shandong) Biotech Co., Ltd.

Zhongshi Duqing (Shandong) Biotech Co., Ltd. makes biological protein peptides and oligopeptides at the Chenji industrial park in the development zone of Heze, Shandong Province. It forms the functional food and protein peptide arm of the Tianjiu group, one of that group's five business divisions, and is registered as a national high and new technology enterprise.

The company holds ISO 22000 and FSSC 22000 food safety certification and Halal certification, and received an AAA quality credit certificate from the China Association for Quality in August 2011. Its project on the development and industrialisation of food-derived oligopeptides took a first prize in the China National Light Industry Council science and technology progress awards in 2011.