PRODUCT CHARACTERISTIC The switch contacts are made of high quality silver alloy material ,which have a good performance against electric arc and melt weld. The on-off operations exceed 40000 times. The socket is made of phosphor bronze, which have the character of good electrical conductivity and lasting elasticity. OUR SERVICE: 1.) Reply inquiry with 8 hours 2.) Answer your question detailed and professional. 3.) Fast delivery 4.) Shipping notification with tracking number will be emailed to you once your order shipped. COMPANY PROFILE Zhejiang Songny Electrical Appliance Co., Ltd is a non-regional group enterprise which was founded in 1985 with 5 affiliated factories in Wenzhou, Shanghai and other places in China. The company mainly engaged in manufacturing wall switches, sockets, plugs, circuit breakers, exhaust fans and other lighting control system products such as energy saving bulbs, halogen lamps and waterproof lamps. Besides these products, the affiliated companies can provide a wide range of other low and high voltage electrical products and electrical accessories, such as AC contactors, thermal relays, fuse, meters, push buttons, nylon cable ties, nail clips and cable terminals. Among them, its affiliated company-Trimon Electric is specialized in producing GFCI socket and accessories.