Qingdao Hongyu Environmental Protection Air Conditioning Equipment Co., Ltd., established on 1999-11-10, Business scope includes central air-conditioning equipment and accessories,heat pump equipment,Green facilities,Building energy saving equipment,baking equipment,humidification equipment,air purification equipment,Water Treatment Equipment Design,Production,Sales,Installation and Maintenance;Indoor and outdoor decoration project,Mechanical and Electrical Installation Engineering,Air Conditioning Installation Engineering Design,Install,construction(Operate with qualifications);Contract Energy Management and Services;Utilization of solar energy and utilization of industrial waste heat;Import and export of goods and technology(Projects prohibited by national laws and regulations shall not be operated,Projects that are restricted by laws and regulations can only be operated after obtaining a license).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)