The picture shows the transformation of fire-fighting facilities in old buildings in Hong Kong


▲ sprinkler system ▲ fire hydrant and throat roller system ▲ manual fire alarm system and emergency lighting ▲ automatic interruption operation device of mechanical ventilation system –/.

Double Ended Ferrule

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【 Scientific and Technological Achievements 】 Jiangsu Zhenjiang Institute of Building Sciences won the third prize of the “Huaxia Award” for【 Scientific and Technological Achievements 】 Jiangsu Zhenjiang Institute of Building Sciences won the third prize of the “Huaxia Award” for

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