Beijing DCH Industrial development Co. Ltd.   Beijing forestry university   Advanced Polymers & Composites Inc.   Beijing Metallurgy and Materials Technology Co., Ltd   Beijing Spring Biology Technology Co.,Ltd.   Beijing BG Biotech Co., Ltd   Beijing Chenghao Technology Co., LTD.   Beijing Green Guardee Technology Co., Ltd   Advanced BioChemicals   Beijing Oilchemleader Science & Technology Development Co., Ltd   Dongchang Advanced Chemical(Jiangsu)Technology Co., Ltd   Beijing Cancer Hospital   Beijing BMT Biopharmaceutical Co., Ltd   Beijing jiada International Exhibition Co., Ltd.   Beijing FortuneStar S&T Development Co., Limited   Beijing Neuronbc Laboratories   Beijing Liediao Weiye Hoisting Equipment Co., Ltd   Beijing Hopelife   Beijing Lunarsun   Beijing Lunarsun Pharmaceutical Co., LTD