DIN 1988-8-1988《饮水管道安装技术规程(TRWI).设备的运转.DVGW的技术规则》
The standard describes the measures for operation and maintenance of drinking water installations and gives comments for components of disturbance and clearing of faults.
The standard describes the measures for operation and maintenance of drinking water installations and gives comments for components of disturbance and clearing of faults.