UNDEFINED MATERIALS

Mineral sands : Mineral sands are part of a class of ore deposits that contain heavy minerals such as ilmenite, zircon, leucoxene, and rutile. Eroded materials from hard rock sources like granite.or basalt accumulates on beaches within river systems and on coastlines. It is these beaches from which these valuable materials are extracted for end use in jewelry; as pigments in paints, plastics, paper, foods; in electronics.

Primary aggregates ：Crushed rock, extracted in hard rock quarries by blasting, crushing; and sand and gravel extracted from pits by excavation and crushing, from lakes, rivers and from coastal beaches or dredged from the sea.

Steel : Steel is a popular construction material, often used alongside concrete to create impressive and long-lasting buildings. Steel is at the core of construction in the housing industry.The main uses of steel in construction are Steel frames,Prefabricated steel, roofing, outbuildings and custom buildings.