There is no registered address of tin myophone electronics ltd., located at b5-1118 no. 298 sing city avenue, no sing wu district, city, and operating in the areas of electronics, sound equipment, audio-visual equipment, communication equipment, technical services and sales; security and surveillance equipment, computer software, hardware and technology development and sale; and the owner of the shop: ip broadcasting, digital broadcasting, stage equipment, background music. All products at the store are three years of quality assurance. School, mall, factory, etc