S.Z. PhyStandard Bio-Tech. Co., Ltd.
                            
                            Telephone0755-4000505016 13380397412
                            Websitehttp://www.phystandard.com.cn
                         
                        
                            
                                Shanghai  Kewel  Chemical  Co.,  Ltd.
                            
                            Telephone021-64609169 18901607656
                            Websitehttp://www.kewelchem.com/
                         
                        
                            
                                Hubei Yangxin Medical Technology Co., Ltd.
                            
                            Telephone 15374522761
                            Websitehttp://www.standardpharm.com
                         
                        
                            
                                TOSUN PHARM
                            
                            Telephone020-61855200 13326451905
                            Websitehttp://www.toref.cn/
                         
                        
                            
                                Jinan blalong chemical co. LTD
                            
                            Telephone 2710913286@.com
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1068244/0_EN.htm
                         
                         
                            
                                SHENZHEN PHYSTANDARD BIO-TECH CO.,LTD
                            
                            Telephone0755-83725350 13380397412
                            Websitehttp://www.phystandard.com.cn
                         
                        
                            
                                QUALITY CONTROL SOLUTIONS LTD.
                            
                            Telephone+86-0755-66853366 +86-13670046396
                            Websitehttps://www.qcsrm.com
                         
                        
                            
                                Molcoo Chemicals Inc.
                            
                            Telephone 18576690171
                            Websitehttp://www.molcoo.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
                         
                         
                            
                                Nanjing Huanuo Biomedical Technology Co., Ltd
                            
                            Telephone 18913906212
                            Websitehttp://www.hnstandards.com/
                         
                        
                            
                                Shenzhen Excellent Biomedical Technology Co., Ltd.
                            
                            Telephone0755-26050679 18318671572
                            Websitehttps://www.ex-biotech.com/
                         
                        
                            
                                Shanghai Zerui Biotechnology Co., Ltd.
                            
                            Telephone021-54580889 18321124657
                            Websitehttp://www.zr-pharmaceutical.com
                         
                        
                            
                                Cato Research Chemicals Inc.
                            
                            Telephone020-81960175-877 18933936954
                            Websitehttps://www.catorm.com/
                         
                        
                            
                                TLC Pharmaceutical Standards Ltd.
                            
                            Telephone18012923235; 18012923235
                            Websitehttp://www.tlcstandards.com
                         
                         
                            
                                Hubei Ruinuo Pharmaceutical Technology Co., Ltd
                            
                            Telephone 13165688766
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList23141/0_EN.htm
                         
                        
                            
                                Huaihua Yuanyanda Biotechnology Co., Ltd
                            
                            Telephone 18229999901
                            Website
                         
                        
                            
                                Changzhou Xianglong Pharmaceutical Technology Co., Ltd.,
                            
                            Telephone 18915873328
                            Websitehttps://www.xianglongpharm.com/