LONGSIN is a professional manufacturer of fire protection (security) products with owned brand, facing the global market, and has 15 years
experience of independent R&D, production and sales. The products include smoke detectors, gas detectors, carbon monoxide detectors,
PIR detectors, magnetic reed switches, strobe sirens and other related accessories. As a national enterprise, LONGSIN is one of the
largest professional fire detector manufacturers in China and even Asia.