J & K SCIENTIFIC LTD.
                            
                            Telephone18210857532; 18210857532
                            Websitehttps://www.jkchemical.com
                         
                        
                            
                                Meryer (Shanghai) Chemical Technology Co., Ltd.
                            
                            Telephone021-61259138 18621169109
                            Websitehttp://www.x-labseek.com/
                         
                        
                            
                                Shanghai Sinch Parmaceuticals Tech. Co. Ltd.
                            
                            Telephone+86-21-54098501 
                            Websitehttp://www.sinch.com.cn/
                         
                        
                            
                                Amadis Chemical Company Limited
                            
                            Telephone571-89925085 
                            Websitehttp://www.amadischem.com
                         
                        
                            
                                Shanghai Silan Pharmaceutical Technology Co. , Ltd.
                            
                            Telephone 17301772648
                            Websitehttp://www.glchemical.cn/
                         
                         
                            
                                Shaanxi Linbang Industrial Co., Ltd
                            
                            Telephone 17709134430
                            Website
                         
                        
                            
                                Biosynth Biological Technology (Suzhou) Co Ltd
                            
                            Telephone 51288865780
                            Websitehttp://www.biosynth.com
                         
                        
                            
                                Santa Cruz Biotechnology Inc
                            
                            Telephone021-60936350 
                            Websitehttp://www.scbt.com
                         
                        
                            
                                Mainchem Co., Ltd.
                            
                            Telephone+86-0592-6210733 
                            Websitehttps://www.mainchem.com