hvac flexible duct 's qualifications and internationally authoritative certifications
All of our hvac flexible duct have been authenticated by international authoritative institutes and cater for the Chinese criteria at the same time. We maintain close contact and extensive cooperation with large enterprises related to the international industry.  These internationally authoritative certifications show that our product is at the forefront of the industry.
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Through worldwide sales network, our combi flexible duct is selling well which has its own dominance in this field. Shanghai Xuanyuan Air Conditioning Equipment Co., Ltd.'s main products include hvac duct series. Manufacturing Xuanyuan combi ducting involves a wide range of stages. They include metal materials purchasing, parts processing, welding, assembly, and testing. It is manufactured in accordance with the national standards of fire protection and fire safety of buildings. This product can be stacked and moved without damage. The metal sheets that make up the product are corrugated to improve its overall strength. It can be easily compressed for transportation purposes.
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Customer oriented has been the focus during the development of Xuanyuan brand. Ask!

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