86-574-63752883
Xinlian Rd., Sanbei Industrial Zone, Longshan Town, Cixi, Ningbo, Zhejiang, China (Mainland)
Battery backup alarm GB-21 sound 1 or 6Tone, US $ 3.47 - 4.10 / Piece, China, GuanHong, 12 Months.Source from Cixi Guanhong Electronics Co., Ltd. on Waimaotong.com.