Chemsky (shanghai) International Co.,Ltd
                            
                            Telephone021-50135380 
                            Websitehttp://www.shchemsky.com
                         
                        
                            
                                Shenzhen Polymeri Biochemical Technology Co., Ltd.
                            
                            Telephone+86-400-002-6226 +86-13028896684;
                            Websitehttps://www.rrkchem.com
                         
                        
                            
                                Guangzhou Dreampharm Biotechnology Co., Ltd.
                            
                            Telephone020-36607679 19925672674
                            Websitehttp://www.dmstandards.com/
                         
                        
                            
                                Hubei Jusheng Technology Co.,Ltd. 
                            
                            Telephone18871490254 
                            Websitehttp://www.hubeijusheng.com
                         
                        
                            
                                Jinan blalong chemical co. LTD
                            
                            Telephone 2710913286@.com
                            Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1068244/0_EN.htm
                         
                         
                            
                                Wuxi Minglu Medicine technology Co.,Ltd.
                            
                            Telephone0510-88726693 
                            Websitehttp://www.mlupharm.com
                         
                        
                            
                                Energy Chemical
                            
                            Telephone021-58432009 400-005-6266
                            Websitehttp://www.energy-chemical.com
                         
                        
                            
                                Scinova Biotech(Guangzhou) Co., Ltd.
                            
                            Telephone 13268215580
                            Websitehttp://www.scinova-e.com/
                         
                        
                            
                                Shanghai Zerui Biotechnology Co., Ltd.
                            
                            Telephone021-54580889 18321124657
                            Websitehttp://www.zr-pharmaceutical.com
                         
                        
                            
                                Henan Vcommend Consultrading Co., Ltd.
                            
                            Telephone 13393721940
                            Websitehttp://www.vcommend.com/
                         
                         
                            
                                Hubei Moco Chemical Co., Ltd.
                            
                            Telephone18627753421; 18627756402
                            Websitehttp://www.molcoo.com/
                         
                        
                            
                                Biosynth Biological Technology (Suzhou) Co Ltd
                            
                            Telephone 51288865780
                            Websitehttp://www.biosynth.com
                         
                        
                            
                                Hubei Rhema Reference Materials Technology Co., Ltd.
                            
                            Telephone 15787875101
                            Websitehttps://www.chemicalbook.com/supplier/138770565/
                         
                        
                            
                                Santa Cruz Biotechnology Inc
                            
                            Telephone021-60936350 
                            Websitehttp://www.scbt.com