J & K SCIENTIFIC LTD.
                            
                            Telephone18210857532; 18210857532
                            Websitehttps://www.jkchemical.com
                         
                        
                            
                                Chemsky (shanghai) International Co.,Ltd
                            
                            Telephone021-50135380 
                            Websitehttp://www.shchemsky.com
                         
                        
                            
                                Shanghai T&W Pharmaceutical Co., Ltd.
                            
                            Telephone+86 21 61551611 
                            Websitehttp://www.trustwe.com
                         
                        
                            
                                Codow Chemical Co.,Ltd.
                            
                            Telephone 18620099427
                            Websitehttp://www.howeipharm.com
                         
                        
                            
                                Chengdu Dianchun Technology Co., Ltd
                            
                            Telephone400-1166-196 15982826727
                            Websitehttp://www.hx-r.com
                         
                         
                            
                                Beijing Jin Ming Biotechnology Co., Ltd.
                            
                            Telephone010-60605840 18892239720
                            Websitehttp://www.jm-bio.com/
                         
                        
                            
                                Shanghai Jizhi Biochemical Technology Co. Ltd.
                            
                            Telephone4009004166/18616739031 18616739031
                            Websitehttp://www.acmec-e.com/
                         
                        
                            
                                Shanghai Hongye Biotechnology Co. Ltd
                            
                            Telephone400-9205774 
                            Websitehttp://www.glpbio.cn/
                         
                        
                            
                                Shenzhen Polymeri Biochemical Technology Co., Ltd.
                            
                            Telephone+86-400-002-6226 +86-13028896684;
                            Websitehttps://www.rrkchem.com
                         
                        
                            
                                Shochem(Shanghai)Co.,Ltd
                            
                            Telephone+86-021-51783479 +86-13816874662
                            Websitehttp://www.shochem.com
                         
                         
                            
                                Shochem(Shanghai) Co.,Ltd
                            
                            Telephone86-21-50800795 
                            Websitehttp://www.shochem.com/
                         
                        
                            
                                Energy Chemical
                            
                            Telephone021-58432009 400-005-6266
                            Websitehttp://www.energy-chemical.com
                         
                        
                            
                                TargetMol Chemicals Inc.
                            
                            Telephone 15002134094
                            Websitehttps://www.targetmol.cn/
                         
                        
                            
                                SHANGHAI ZZBIO CO., LTD.
                            
                            Telephone15102117276 19921389125
                            Websitehttps://www.zzsrm.cn/
                         
                        
                            
                                Hubei Danding Pharmaceutical Technology Co., Ltd
                            
                            Telephone17701422016 
                            Websitehttp://www.hbdandingyy.com
                         
                         
                            
                                Merck KGaA
                            
                            Telephone21-20338288 
                            Websitehttp://www.sigmaaldrich.cn
                         
                        
                            
                                Biosynth Biological Technology (Suzhou) Co Ltd
                            
                            Telephone 51288865780
                            Websitehttp://www.biosynth.com
                         
                        
                            
                                Santa Cruz Biotechnology Inc
                            
                            Telephone021-60936350 
                            Websitehttp://www.scbt.com