Shenzhen Dongri Yingneng Technology Co., Ltd. is engaged in the general business of: design, development, sales, on-site installation, and on-site maintenance of explosion-proof and toxic gas detection and alarm equipment, gas analysis systems, environmental emission monitoring systems, network video surveillance products, home intelligent products and IoT systems, environmental protection and energy-saving systems, and clean energy systems; domestic trade; import and export of goods and technologies; manufacturing of special instruments and meters for environmental monitoring. (Excluding businesses that require special approval, operates independently according to the business license); manufacturing and sales of refrigeration and air conditioning equipment; sales of power electronic components; installation services for general machinery and equipment; engineering design services; engineering management services; industrial design services; technical services, development, consultation, exchange, transfer, and promotion; engineering technical services (excluding planning, survey, design, and supervision); energy contract management; energy-saving management services; maintenance of electronics and mechanical equipment (excluding special equipment); sales of instruments and meters; repair of general equipment; repair of special equipment. (Excluding businesses that require special approval, operates independently according to the business license), and licensed businesses include: the production of explosion-proof and toxic gas detection and alarm equipment, gas analysis equipment, environmental emission monitoring equipment, network video surveillance equipment, home intelligent products and IoT equipment, environmental protection and energy-saving equipment, and clean energy equipment; sales of pre-packaged food; construction of construction projects; construction of building intelligent systems; design of building intelligent systems; subcontracting of building labor.