Qingdao Greenchem international Trading Co.,Ltd.
EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Qingdao Greenchem international Trading Co.,Ltd is the wholly-owned subsidiaries of BeiJing Greenchem Technology Co.,Ltd and takes charge of the company's export business. BeiJing Greenchem Technology Co.,Ltd is the biggest manufacturer of organic phosphine and organic phosphine precious metal chemical complex in