Shenzhen Opensea Technology Co., Ltd was established in 2004 and has created the famous brand "Opensea" security industry. Our main products are auto-dial alarm systems, wired/wireless Control Panels, cameras, all kinds of gas sensors, smoke ...

General Monitors is recognised as a worldwide leader in the development and manufacturing of state-of-the-art gas monitoring flame detection instrumentation. The range product includes combustible detectors, toxic H2S oxygen deficiency detectors ...

Established in 1992, Korea New Ceramics Co., Ltd., specialized gas sensors; develops and manufactures Semiconductor Type Gas Sensors Catalytic Bead Sensors. Our sensors have been recognized used extensively by many of our customers. Suitable for ...

Specialize in manufacturing, researching and selling security protection products.ALEAN build it\'s name the security&protection industry since 1996, we have been serving clients worldwide from more than 60 countries.We make every effort to lead ...