According to official website's inquiry, Nanjing Chenglian Laser Technology Co., Ltd. was established on September 28th, 20 17. Its business scope includes sales of stainless steel, optical instruments and laser equipment, research and development of 3D printing technology, technology transfer, sales and leasing of medical equipment, mechanical equipment and electrical equipment. The enterprise type is a limited liability company invested by Hong Kong, Macao and Taiwan, which is not wholly-owned and not listed, and is regulated by the Nanjing market.