Material:galvanized,stainless steel sheet. Feature: Smoke exhuasted meatus usually install in vent-pipe and close the valve,and it can control by DC24V to turn on the valve.The v

Manual tools for Fabricating

UNTDuct  PU Insulated  Ductwork with Black Aluminum foil is widely used for the air distribution is widely used for the air distribution of central air duct system, which is one of the

UNTDuct  PU PID Duct with Black Aluminum foil is widely used for the air distribution  is widely used for the air distribution of central air duct system, which is one of the most adva

UNTDuct  PU Pre-insulated Duct Sheet for AC System The UNTDuct Polyurethane (PU) Foam Pre-insulated air duct panel is widely used for the air distribution of central air duct system, which

UNTDuct  PU Pre-insulated Duct Sheet for AC System The UNTDuct Polyurethane (PU) Foam Pre-insulated air duct panel is widely used for the air distribution of central air duct system, which

UNTDuct Phenolic Foam Pre-insulated Air Duct The UNTDuct Phenolic Foam Pre-insulated Duct System is like no other insulated ductwork system. It is the most advanced and innovative energy saving

The UNTDuct Phenolic Foam Pre-insulated Ductwork System is like no other insulated ductwork system. It is the most advanced and innovative energy saving system of air-distribution ductwork available w

The UNTDuct Phenolic Foam Pre-insulated Duct System is like no other insulated ductwork system. It is the most advanced and innovative energy saving system of air-distribution ductwork available world