For contractors working on walls, roofs, plant rooms, and acoustic rooms, glass wool panels are often chosen because they are light enough to cut on site but still firm enough to fit into a frame. In the supplied Henggang product notes, glass wool board is described as a glass fiber insulation material used for construction, industry, and transportation projects. Common site use includes wall and roof insulation for light steel buildings, acoustic treatment with 50 mm boards and 100 mm cavities, and pipe-area protection where heat loss needs to be controlled.
What buyers usually care about is not a long promise, but whether the board is easy to handle and whether the numbers make sense for their job. A density of 48 kg/m3 is mentioned for high-temperature equipment use, and the notes also refer to heat loss control at 400 C. That gives engineers a clearer basis when comparing insulation thickness, facing material, and installation method.