S.Z. PhyStandard Bio-Tech. Co., Ltd.
                            
                            Telephone0755-83725681-603 
                            Websitehttp://www.phystandard.com.cn
                         
                        
                            
                                Nanjing XiZe Biotechnology CO., Ltd.
                            
                            Telephone025-66023220 0086-15250997978
                            Websitehttp://www.njxizebio.com
                         
                        
                            
                                Shanghai CR Corporation Limited
                            
                            Telephone13062833949; 4006653949 4006653949
                            Websitehttp://www.crcorporation.cn
                         
                        
                            
                                Shenzhen Botel Biotechnology Co. Ltd.
                            
                            Telephone13316949107 13316968096
                            Websitehttp://www.szbotaier.com/
                         
                        
                            
                                CR Corporation Limited
                            
                            Telephone +8613062833949
                            Websitehttp://www.crcorporation.cn/
                         
                         
                            
                                sgtlifesciences pvt ltd
                            
                            Telephone +8617013299288
                            Websitehttps://www.chemicalbook.com/manufacturer/sgtlifesciences-pvt-591/
                         
                        
                            
                                Guangzhou Dreampharm Biotechnology Co., Ltd.
                            
                            Telephone020-36607679 19925672674
                            Websitehttp://www.dmstandards.com/
                         
                        
                            
                                Jinan blalong chemical co. LTD
                            
                            Telephone 2710913286@.com
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1068244/0_EN.htm
                         
                        
                            
                                Guangzhou Juntang Technology Co., Ltd
                            
                            Telephone020-36607679 13502246435
                            Websitehttp://www.dmstandards.com
                         
                        
                            
                                QUALITY CONTROL SOLUTIONS LTD.
                            
                            Telephone+86-0755-66853366 +86-13670046396
                            Websitehttps://www.qcsrm.com
                         
                         
                            
                                Huaihua Yuanyanda Biotechnology Co., Ltd
                            
                            Telephone 18711085600
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1118979/0_EN.htm
                         
                        
                            
                                Shenzhen Roark Pharma-Tec Co., Ltd.
                            
                            Telephone 13128912434
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1522230/0_EN.htm
                         
                        
                            
                                LGC Science (Shanghai) Ltd.
                            
                            Telephone 17717235263
                            Websitehttps://www.lgcstandards.com/CN/en/Pharmaceutical/cat/279492
                         
                        
                            
                                Nantong Hanfang Biotechnology Co. , Ltd.
                            
                            Telephonehanfangpharma@126.com; 18616537568
                            Websitehttps://hanfangpharma@126.com
                         
                        
                            
                                Huaihua Yuanyanda Biotechnology Co., Ltd
                            
                            Telephone 18229999901
                            Website