stone and clay products, manufactured chemical products, oil and coal products, plastics, pulp and paper, paper and paper processed goods, manufactured textile products, rubber products, leather ...
Gemological, spectroscopic, and chemical analyses were performed on both untreated and treated cultured pearls to provide a better understanding of the “chocolate” treatment process that is used by ...
Reconstructed Stone Reconstructed stone products are produced by the ‘wet cast’ method ... Precast Concrete Conventional and architecturally designed structural precast concrete products are ...