Shen zhen Chaoyi industrial development company is one of the leading ISO9001:2000 enterprise which specializes in producing fire alarm bell, button, flashing light and telephone jack China.We founded 1993 now we have rich experience products marketing ...

Shenzhen P&H Electronic Co., Ltd, founded in 1999, began as the R&D manufacturer of sirens and set up a solid reputation based on favorable design exceptional reliability, which greatly fueled our involving into Auto Accessories, Intrusion Alarm Fire ...