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1600 Light Weight Refractory Castables for Industrial Furnace. Excellent Mechanical Strength: Features high cold crushing strength and modulus of rupture for durability. Light Weight & Low Conductivity: Designed for thermal insulation with low thermal conductivity and bulk density. OEM Service Available: We accept OEM orders to meet specific customer requirements. Free Samples Provided: Free samples are available for customers to test product quality. ISO9001 Certified: Products are certified with ISO9001 and come with test reports. Wide Application Range: Suitable for steel, cement, aluminum, and petrochemical industries. No MOQ for Trial Orders: There is no minimum order quantity limit for trial orders.