Composite fiberglass fabricThermal sealing facing and vapor barrier for insulating materials such as glass wool, rock wool, mineral wool PEF products, and rubber-plastic products. Suitable for cotton felt, cotton board, cotton pipes, and PEF board pipes, rubber-plastic pipes, it meets the thermal sealing requirements for heating, ventilation, and air conditioning pipes, as well as for cold and hot water pipes. It also satisfies the needs of building insulation, ensuring a warm winter and cool summer indoors, providing year-round comfort.