Profile: Tianjin Oriental International Trading Co., Ltd. is a manufacturer of sodium sulfide, sodium hydrosulfide, sodium hydroxide, sodium carbonate and anhydrous sodium sulfate. Sodium sulfides are used in dyeing industry. It is the raw material for sulfur black and sulfur blue. It is used for the dyeing assistant in the dissolution of sulfur dyes in printing and dyeing industry. These are soluble in water and micro-soluble alcohol but do not dissolve in ether. Caustic soda is a basic chemical raw material, widely used in artificial fiber, dyeing intermediates, textile bleaching, reclaimed rubber, paper making, soap-making, oil-refining, medicament and plastic industries. Sodium hydrosulfides are used in the artificial fiber industry of sulfurous acid dyeing. These are also used in the copper ore beneficiation & dyeing industry for organic intermediates synthesis and for the preparation of auxiliary agent of sulfur dyes. It is the main raw material for producing ammonium sulfate and ethanethiol. Sodium carbonate is used in metallurgy, textile, printing & dyeing, foodstuff, glass, enamel, medication and paper making businesses.