Sumec Corporation Limited engages in the supply and industrial chain business in China. The company offers industrial chain products and services, including clean energy, such as photovoltaic products and engineering, operation, and maintenance services; ecological and environmental protection that includes sewage treatment, garbage treatment, soil remediation, restaurant kitchen waste treatment, biodegradable plastic industrial engineering, etc.; outdoor power equipment, diesel generator sets, and shipbuilding and shipping; and textiles and clothing comprising clothing, home textiles, brand school uniforms, etc. It also provides supply chain integration services, such as bulk commodity operations and electromechanical equipment trade. In addition, the company offers investment and financing services. It also exports its products. The company was formerly known as Changlin Company Limited and changed its name to Sumec Corporation Limited in October 2017. Sumec Corporation Limited was founded in 1978 and is based in Nanjing, China.