Shengyuan Refractory and Insulation Materials Factory has been deeply involved in the fire retardant and thermal insulation material industry for 20 years, and has been responsible for the procurement of construction, steel structure, and industrial pipeline projects all year round. Fire protection and exterior wall insulation regulations will continue to tighten in various places in 2026. Many purchasers and construction parties only base their judgment on price and appearance when selecting fireproof rock wool. Later, problems such as insulation failure, fire acceptance failure, and wall falling off will occur. This article combines national standards and front-line engineering experience to completely dismantle the entire selection process of fireproof rock wool to avoid hidden procurement risks. Fireproof rock wool is matched according to the engineering scenario, taking into account compliance, cost and durability. For low-rise indoor and computer room partitions, if you are pursuing basic fire protection and thermal insulation, choose 50-80mm general fireproof rock wool, which is more cost-effective. For exterior wall and curtain wall sealing of high-rise buildings and steel-structured factories, 80-100mm high-density vertical wire fireproof rock wool is used, which has strong tensile strength and prevents the surface layer from falling off, making it easy to pass the exterior wall acceptance. In humid scenes such as coastal areas, basements, and smoke exhaust ducts, hydrophobic fireproof rock wool is suitable to resist water vapor erosion. Thermal and HVAC pipes can be matched with fireproof rock wool pipe shells of the same specification. For multi-area composite projects, corresponding fireproof rock wool can be selected in different zones to balance costs and fire safety standards.