Pdf on jan 1, 2016, wedad rayif alharbi and others published investigation on 226 ra, 238 th, 40 40 k and 137 cs concentrations in common polishing materials consumed by inhabitants in saudi u2026 We started our long journey in 1963, as a building materials trader, we obtained sufficient experience that allowed us to assist the saudi marketu2019s particular needs. in 1982, we opened the first saudi integrated factory for water tanks and other fiberglass products. The company is located on the bank of the beautiful xin an river, which is only 30km from the worldwide famous sight of scenery---qiandao lake. the factory covers 6.7 hectares, with building area of 55,925?, capital assets of 1.25 million usd, more than 70 units of production facilities, and over 200 staff,including 50 professional technicians. Porcelain enamel coatings we offer engineered porcelain enamel frits in powder, paste, ready-to-mill and ready-to-use (rtu) forms. our products are specifically formulated to provide a wide range of chemical, physical and aesthetic properties to meet our customers' needs.