Dongguan Longwei Electronic Technology Co., Ltd. (Formally known as HK Longwei) was founded in 1996, specializing in making oscilloscopes, direct currency regulated power supplies, and special instruments. In recent years, Dongguan Longwei Electronic Technology Co., Ltd. has been well accepted by customers from both at home and abroad. Our product quality is improving unceasingly and the scale is enlarging. We are in possession of 200 production members, among whom 28 are professional ...