Activecommunication (HK) International Co., Ltd. As a lead China Supplier of security products, Activecommunication (HK) International Co., Ltd specializes in designing and manufacturing innovative, products for global market. Now our product range includes gas detector and electronic valves and solar energy products. All our products have the CE/FCC certification and comply with the RoHS Directive. We also provide one-stop OEM/ODM service to meet the various market needs worldwide.