·Central Steel Manufacturing Co.,Ltd
·Wuhan Liankeliji Railway Equipment Co., Ltd
·Xi'an Smile lndustry and Business Co.,Ltd
·Shaanxi Rebecca Biotechnology Co., Ltd.
·Shenzhen Beilai Technology Co., Ltd.
·China Valmax Valve Co., Ltd.
·Guangdong Shangshan Precision Machinery Co., Ltd.
·China Topper Forged Valve Manufacturer Co., Ltd.
·Demark (Wuhan) Technology Co.,Ltd