Shanghai Qisheng Electric Appliance Co., Ltd., established in 1997, focuses on designing, manufacturing and selling audio sound reinforcement, conferencing and broadcasting systems. We are a manufacturer and a high-tech enterprise in Shanghai. Our BGM brand Conference Systems and Public Address Systems have won a number of national high-tech certifications. Over the years, BGM has professionally supplied Government Department, Public Department, Education Department and Commercial Customers with the business scope from broadcast, conference products and after-sales services to program design,...