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BIG FIRE SURVEILLANCE TECHNOLOGY LIMITED
Room 1301, Kin Wing Industrial Building, 33 Kin Wing Street, Tuen Mun, Hong Kong
BIG FIRE SURVEILLANCE TECHNOLOGY (SHENZHEN) LIMITED
Room 307, 3/F, Block 1, Huiheng Building, High-tech South 7th Road, Nanshan District, Shenzhen City, Guangdong Province