It can simplify the fire supply system of highrise building by applying pressure relief valve to vertical compartment.
采用减压阀对高层建筑物的消防给水系统进行竖向分区,可以简化系统。
2
The patents of hot keypad, vertical cash drawer, hanging rock-relief label scale and POS with downward direction scanner have proved that no creating is not the product of Pinnacle.