Who knows what brand of Jetta's all-copper warm air tank is? Please have a look.

The selection of copper tube Jetta warm air tank has certain technical basis. When the aluminum tube and copper tube are immersed in oxalic acid for 24 hours at the same time, the aluminum tube will be corroded, while the copper tube will be bright and hardly corroded. This is also the reason why people choose the copper tube Jetta heater water tank. Retail price 1 10 yuan/piece.