Working steel pipe + rigid polyurethane foam insulation layer + outer protection spiral air duct (galvanized pipe, aluminum plate, stainless steel plate)
View DetailsWork pipe + nano aerogel + magnesium silicate tile + reflective film + polyurethane + external spiral spiral pipe (galvanized pipe, aluminum plate, stainless steel plate)
View DetailsWork pipe + polyurethane rigid foam + FRP (composite material made of glass cloth and synthetic resin)
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