J & K SCIENTIFIC LTD.
                            
                            Telephone18210857532; 18210857532
                            Websitehttps://www.jkchemical.com
                         
                        
                            
                                Meryer (Shanghai) Chemical Technology Co., Ltd.
                            
                            Telephone021-61259138 18621169109
                            Websitehttp://www.x-labseek.com/
                         
                        
                            
                                BeiJing Hwrk Chemicals Limted
                            
                            Telephone0757-86329057 18934348241
                            Websitehttp://www.hwrkchemical.com/
                         
                        
                            
                                Shanghai Hanhong Scientific Co.,Ltd.
                            
                            Telephone021-54306202 13764082696
                            Websitehttps://www.hanhongsci.com
                         
                        
                            
                                Shanghai T&W Pharmaceutical Co., Ltd.
                            
                            Telephone+86 21 61551611 
                            Websitehttp://www.trustwe.com
                         
                         
                            
                                Shanghai Worldyang Chemical Co.,Ltd.
                            
                            Telephone021-021-56795766 
                            Websitehttp://www.worldyachem.com
                         
                        
                            
                                Sigma-Aldrich
                            
                            Telephone021-61415566 800-8193336
                            Websitehttps://www.sigmaaldrich.cn
                         
                        
                            
                                Suzhou Siso new material Co.,Ltd.
                            
                            Telephone0512-65402974 18550909935; 
                            Websitehttp://www.szsiso.cn
                         
                        
                            
                                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
                         
                         
                            
                                Hubei shengdali Chemical Co., Ltd
                            
                            Telephone027-83629626 18995558541
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1896396/0_EN.htm
                         
                        
                            
                                ShenZhen Trendseen  Biological Technology  Co.,Ltd.
                            
                            Telephone13417589054 
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList312717/0_EN.htm
                         
                        
                            
                                Baoji Didu Pharmaceutical and Chemical Co., Ltd
                            
                            Telephone029-029-81148929 17791530722
                            Websitehttps://www.dideu.com
                         
                        
                            
                                Merck KGaA
                            
                            Telephone21-20338288 
                            Websitehttp://www.sigmaaldrich.cn
                         
                        
                            
                                Santa Cruz Biotechnology Inc
                            
                            Telephone021-60936350 
                            Websitehttp://www.scbt.com
                         
                         
                            
                                Shanghai Daken Advanced Materials Co.,Ltd
                            
                            Telephone+86-2158073036 
                            Websitehttps://www.dakenchem.com/
                         
                        
                            
                                ShenZhen Trendseen  Biological Technology  Co.,Ltd.
                            
                            Telephone 13417589054
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1962465/0_EN.htm