·China Valve Packing Co., Ltd.
·HeBei LiSu Technology Co.,Ltd.
·Hong Kong City
·Xi'an Angel Biotechnology Co.,Ltd
·Hangzhou?Royal?Packing?Machinery?Co.,Ltd
·yelinmachine
·Shandong Decao Machinery & Equipment Co., Ltd
·Xiamen Sharp Dragon International Trading Company Limited
·BEIJING CHANNEL SCIENTIFIC INSTRUMENT CO., LTD