Ningbo Hengjia FireProof Materials Factory is the professional enterprise specializes in producing Special Flexible Duct For Air Cleaning System, Heat protection Ventilation Duct for Air conditioning, Nonmetallic Ventilation Duct, expansion joint, Smoke Cord Fabric, and high temperature cloth. We have powerful technology ability and scientific research ability, we are famous of unique experience in manufacturing ventilation duct and steady quality, and which help us win abroad well-deserved reputation in the market, our products play the top role of domestic nonmetal compensator line. The products apply in fields such as communal and industrial construction, petroleum, chemicals, metallurgy, electric power, mine, grain storage, environmental protection, underground, tunnel , and so on. Our achievement spreads all over the world, and welcomed by customers.
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