HVAC air duct coupling / nipple
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material: galvanized steel sheet
APPLICATION: air ductwork of HVAC and ship etc.
pre-insulated duct, regulating damper, circular silencer, fittings and pieces in the production of customers requirements, dealing with various air flow measurement. Our products mainly consist of ship fittings and HVAC fittings of ductwork in construction and real estate industry. We can offer mass production with low cost and high quality thank to computer operation processing syste