What grade does Shanghai Siyuan Electric belong to?

Shanghai Siyuan electric appliance is high-grade. Shanghai Siyuan High Voltage Switch Co., Ltd., a well-known brand in the electrical industry, a listed company, a national key high-tech enterprise, a Shanghai high-tech enterprise, a Shanghai famous brand product, a national innovative pilot enterprise and a national enterprise postdoctoral research center, is a company specializing in power technology research and development, equipment manufacturing and engineering services.