J & K SCIENTIFIC LTD.
                            
                            Telephone18210857532; 18210857532
                            Websitehttps://www.jkchemical.com
                         
                        
                            
                                Meryer (Shanghai) Chemical Technology Co., Ltd.
                            
                            Telephone021-61259138 18621169109
                            Websitehttp://www.x-labseek.com/
                         
                        
                            
                                Energy Chemical
                            
                            Telephone021-021-58432009 400-005-6266
                            Websitehttp://www.energy-chemical.com
                         
                        
                            
                                Shanghai Hanhong Scientific Co.,Ltd.
                            
                            Telephone021-54306202 13764082696
                            Websitehttps://www.hanhongsci.com
                         
                        
                            
                                Shandong Xiya Chemical Co., Ltd
                            
                            Telephone4009903999 13355009207
                            Websitehttp://www.xiyashiji.com
                         
                         
                            
                                Sichuan Kulinan Technology Co., Ltd
                            
                            Telephone400-1166-196 18981987031
                            Websitehttp://www.hx-r.com/
                         
                        
                            
                                Chengdu Ai Keda Chemical Technology Co., Ltd.
                            
                            Telephone4008-755-333 18080918076
                            Websitehttp://www.aikeshiji.com
                         
                        
                            
                                Thermo Fisher Scientific
                            
                            Telephone800-810-5118 
                            Websitehttp://www.thermo.com.cn
                         
                        
                            
                                Bide Pharmatech Ltd.
                            
                            Telephone400-164-7117 13681763483
                            Websitehttp://www.bidepharm.com
                         
                        
                            
                                Shanghai Macklin Biochemical Co.,Ltd.
                            
                            Telephone 15221275939
                            Websitehttp://www.macklin.cn
                         
                         
                            
                                Sigma-Aldrich
                            
                            Telephone021-61415566 800-8193336
                            Websitehttps://www.sigmaaldrich.cn
                         
                        
                            
                                Zhengzhou Huiju Chemical Co., Ltd.
                            
                            Telephone0371-55900031 18137872243
                            Websitehttps://www.chemicalbook.com/supplier/11124122/
                         
                        
                            
                                Shandong Ono Chemical Co., Ltd.
                            
                            Telephone0539-6362799 20) 
                            Websitehttp://www.onochem.com
                         
                        
                            
                                9ding chemical ( Shanghai) Limited
                            
                            Telephone021-021-52271985 17721149837
                            Websitehttp://www.9dingchem.com
                         
                        
                            
                                Aikon International Limited
                            
                            Telephone025-58851090 15955137747
                            Websitehttp://www.aikonchem.com
                         
                         
                            
                                Tianjin heowns Biochemical Technology Co., Ltd.
                            
                            Telephone400-6387771-6039 18920764717
                            Websitehttp://www.heowns.com
                         
                        
                            
                                Shenzhen Polymeri Biochemical Technology Co., Ltd.
                            
                            Telephone+86-400-002-6226 +86-13028896684;
                            Websitehttps://www.rrkchem.com
                         
                        
                            
                                Hefei TNJ Chemical Industry Co.,Ltd.
                            
                            Telephone+86-0551-65418671 +8618949823763
                            Websitehttps://www.tnjchem.com