制冷设备、空气分离设备安装工程施工及验收规范
Code for construction and acceptance of refrigeration plant and air seperation plant installation
Code for construction and acceptance of refrigeration plant and air seperation plant installation
Code for construction and acceptance of refrigeration plant and air seperation plant installation
Code for design of municipal wastewater reclamation and reuse
Code for design of municipal wastewater reclamation and reuse
Armouring hose for the connection of gas appliance
Electro-magnetic emergency shut-off valve for gas
Compounded rubber hose for internal use in gas appliance connection
Control standards of pollutants in sludge for agricultural use
Stainless steel corrugated tubes for the connection of gas appliances
Commercial gas-burning appliance