(China’s well-known trademark, China’s famous brand product, high-tech enterprise, one of the largest domestic energy meter manufacturers, Ningbo Samsung Electric Co., Ltd.) 2. Holley (in 1970, China’s well-known trademark , Chinese famous brand, Zhejiang famous brand, Zhejiang famous trademark, high-tech enterprise, export inspection-free, Holley Instrument Group Co., Ltd.) 3. Lin Yang (a high-tech enterprise specializing in the research and development of smart electric energy meters, Chinese famous brand products, the most popular in the industry One of the most competitive enterprises, Jiangsu Linyang Electronics Co., Ltd.) 4. Wasion (China's well-known trademark, Chinese famous brand, China's leading energy metering equipment system and service provider, high-tech enterprise, Hunan famous trademark, Wasion Group Co., Ltd. ) 5. CLOU
(National high-tech enterprise, famous trademark in Guangdong Province, top ten brands of electric meters, China's leading power equipment manufacturer, Shenzhen CLOU Electronic Technology Co., Ltd.) 6. Chint CHNT
(China's leading professional supplier of energy metering products, systems and solutions, national high-tech enterprise, Zhejiang Chint Instrument Co., Ltd.) 7. Haoningda (integrated scientific research, development, production , a high-tech Sino-foreign joint venture integrating sales and service, a national high-tech enterprise, Shenzhen Haoningda Instrument Co., Ltd.) 8. Great Wall Development
(Began in 1985, the formulation of domestic electric meter industry standards One of the world's leading electronic product R&D and manufacturing enterprises, Shenzhen Great Wall Development Technology Co., Ltd.) 9. Delixi (China's well-known trademark, leading enterprise in the electrical industry, high-tech enterprise, influential brand, National Enterprise Technology Center, China Delixi Holding Group Co., Ltd.) 10. Ningguang (Ningxia famous trademark, national high-tech enterprise, well-known electronic energy meter brand, provincial enterprise technology center, Ningxia Longi Ningguang Instrument Co., Ltd.)