Harbin Rainbow Technology Co.,Ltd. is a leading fastener equipment dealer and manufacturer in China. We have invested in four factories that specialize in Cold forming, Thread rolling, Heat treatment, and Electro plating equipment. With over 30 years of experience, we supply a wide range of fastener equipment to customers worldwide, including Bolt Makers, Nut Makers, Cold Heading Machines, Thread Rolling Machines, Wire Drawing Machines, Heat Treatment Furnaces, and Zinc Plating lines. We have gained a strong reputation and experienced significant business growth, earning long-term partnerships with reputable companies. Our motto is "ONCE BUSINESS, FOREVER FRIENDS", and we are committed to providing excellent service and building a bright future together.