Founded in 2000, Hebei Zeshuo Biotechnology Co., Ltd(formely known as North China Pharmaceutical Group Bei’an Co.,Ltd.). is a leading manufacturer in the development and production of pharmaceutical intermediates. we have been specializing in manufacturing and worldwide selling of pharmaceutical intermediates for laboratory, pharmaceuticals company and chemical market. We have synthesized a broad range of important side chains of Beta-lactam antibiotics, such as ,D-Phenylglycine dane salt(E,K), DL-P-Hydroxyphenylglycine and so on, which are widely used in the production of penicillin antibiotics and cephalosporin antibiotics.