Fire-resistant areas: unshaped refractory, gunning materials, castables, engage in electric mix, light burned magnesia slagging ball, carbon and iron particles, such as the ball.

• 耐火领域有：不定型耐火材料，喷补料，浇注料，电炉搞打料，轻烧镁质造渣球，碳球及铁石颗粒等。