... industry can produce all kinds of flat glass, wire glass, patterned glass, hollow glass, foam glass, glass tiles, all kinds of ... off guard Ray special glass. 4. Foundry industry for molding sand. 5. Metallurgical industry can be used for smelting additives, flux ... materials. 7. Cement industry cement ingredients can be used for sand, aerated concrete, common products. 8. Chemical industry can produce ...