Zhejiang OPT chain transmission Co., Ltd. A modern enterprise, is located zhejiang.china. OPT chain is mainly engaged in the production Long pitch conveyor chains, Welded steel mill chains, Forged Chains, Conveyor Chains, Roller Chains, agricultural chains, leaf chains, double plus chains, scraper conveyor chains, Special chains Engineering Chains，stainless steel chains, etc. All products superior selection, strictly in accordance with international standards of production, products are best-selling in european, The united states and southeast asia, also in the demestic market. It is the fastest-growing one of the modern chain manufacturer. Our products are widely used in industry, agriculture, construction, mining, metallurgy, petroleum, transportation, escalators, textile, food, medicine, chemical industry, priting and other industries.