bend 90 degree
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pre insulated duct
material:gavanized steel sheet
pre-insulated duct, regulating damper, circular silencer, fittings and pieces in the production of customers requirements, dealing with various air flow measurement.
compared with the treditional air duct, has a lot of advantages. please feel free to contact us.
and we are also the verified member of Alibaba. 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 system