·Kelilong Electron Co.Ltd
·Senwell Machinery Company
·China Vervo Valve Manufacturer Co., Ltd.
·Guangdong ALl Testing Equipment Co,.Ltd
·Protropic Cia. Ltda.
·China Ball Valve Manufacturer Co., Ltd.
·China Topper Control Valves Manufacturer Co., Ltd.
·Luoyang CITICIC Industries Co Ltd
·ISO9000