TRL Krosaki China (TRLK China, 营口黑崎铁瑞耐火材料有限公司, formerly known as TRL China) is a company that manufactures and distributes refractory products. It offers basic, dolomite, high alumina, monolithic, silica, taphole clay, and RH snorkel refractories. The company also provides technical services such as refractory management, refractory engineering, and technical support.