HG sound insulation and thermal insulation products are divided into two series, HG sound insulation and thermal insulation composite pad series, HG sound insulation and thermal insulation single-component series, both series have obvious sound insulation and thermal insulation effects, but each has its own focus, the composite series focuses on thermal insulation and can be sound insulation, the single-component series focuses on damping and sound insulation effect, but also has certain thermal insulation properties.