Hunan HLC Metal Technology Ltd

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Roof Turbine Ventilator with Efficient Venting Function and Unique Variable Angle Tube	Aluminum stamping parts, strict quality control and management	Precision Metal Stamping, Made of Stainless Steel and Aluminum Materials	Special-shaped Spring
Coil spring	Roof Turbine Ventilator with Efficient Venting Function and Unique Variable Angle Tube