• Beijing Saichuang Chemical Co.,Ltd.
• +86-10-61982208
• China

• Beijing Shenda Fine Chemical Co.,Ltd.
• +86-10-80566912 80566122
• China

• Beijing Shengyuan Hengfeng Agriculture Technology Development Co.,Ltd.
• 0086-10-81797706 81797550
• China

• Beijing SHLHT Chemical Technology
• +86 10 68835641/68835642/88707647
• China

• Beijing Sinowall Science & Technology Co.,Ltd.
• +86-10-51606228
• China

• Beijing Sinoweiye Chemical Technology Co.,Ltd
• 010-57411698
• China

• Beijing Soarsung Technology Co., Ltd.
• 13801051730
• China

• Beijing SSK Pharmaceutical Technology Development Co., Ltd.
• +86-10-84923397 84923429 013501068524
• China

• Beijing swhc Techonlogy Co.,Ltd
• 010-80551598
• China

• Beijing Synergy Co., Ltd.
• 010-62976173/13581987639
• China

• Beijing Taiyajie Technology Co., Ltd. Shanghai Sales Department
• +86-021-37909087
• China

• Beijing Tiangang Auxiliary Co., Ltd.
• +86-10-67604525-280
• China

• Beijing Tianheng Pharmaceutical Research Institute
• +86-10-68180939-119
• China

• Beijing Tongqing Putian Science & Technology Development Co., Ltd
• +86-10-82472193
• China

• Beijing TOP Science Biotechnology Co., Ltd
• 0086-10-56209960 ;400-898-1085
• China

• Beijing Wintic Pharma Co.,Ltd
• +86-10-85893257 13701315973
• China

• Beijing Xing Li Gong Mao Co., Ltd.
• 86-10-89248573
• China

• Beijing Xitao Tech Co.Ltd
• 010-60491833　　60491602
• China

• Beijing Yangcun Chemical Co.,Ltd.
• 86-10-87204716 87288429
• China

• Beijing Yatai Longxing Chemical Company Limited
• +86-10-87744057 13601184965 13910205515
• China