Shanghai Renmin Electrical Apparatus Works (SREAW) is subordinate to Shanghai Electric Group Co.,Ltd . It is one of the largest manufacturer of medium and low voltage electrical appliances in China which integrates research and development, production, processing, marketing and service. It specializes in manufacturing circuit breakers, contactors, thermal relays, electromagnetic starters and automation control products. It has been more than a hundred years since established in 1914. 

SREAW has always been in the forefront of the development of medium and low voltage electrical appliances in China with the spirit of "self-pressurization, pioneering and innovative". 

Through technology introduction, independent research and development, joint design and integration of production, learning and research, enterprises can accelerate product updating and upgrading so thatproducts can reach the international advanced level and domestic leading level. "Shanglian" brand Circuit breaker, high-voltage vacuum circuit breaker, molded case circuit breaker, miniature circuit breaker, AC contactor and so on were evaluated as "China famous brand products", "Shanghai famous brand products". The leading products were successively evaluated as national key new products and national science and technology progress award, and China machinery industry science and technology advancement. Business after-sales service has won the title of the top ten enterprises in the country. Enterprise products have all passed 3C certification. In 1994, the company became the first enterprise to pass the ISO 9001 quality certification system in the low voltage electrical appliances industry. 

As an excellent national brand, "Shanglian" will further enhance customer satisfaction and social benefits, strive to become the best enterprise in the industry, and make "Shanglian" the most valuable and powerful electrical brand in China's low-voltage electrical industry.