We are a famous reputation Chinese manufacturer concentrating on medical devices, named Zhejiang Kangshi Medical Devices Co., Ltd., which located in the beautiful city --- Hangzhou, China. Our main products line are Vacuum blood collection tube, like Non-anticoagulation tube, PRO-coagulation tube, Gel&clotactivator tube, EDTA tube, Heparin tube, Heparin tube, PT tube, ESR tube, etc.