Dalian Sizhong Refrigeration Equipment Co., Ltd., formerly known as Dalian Refrigeration Equipment Auxiliary Factory, is located in Longtou Street, Lushunkou District, Dalian. The company was established in 1981, with an area of 30,000 square meters and a construction area of 9,000 square meters. It has fixed assets worth 25 million yuan, 350 employees, including 32 engineering and technical personnel and 18 management personnel. The company consists of 12 departments and 3 workshops, with 160 main production equipment. In 1988, the company obtained the production license for Class I and II pressure vessels; in 1997, it obtained the design license for Class I and II pressure vessels; in 2000, it received the installation license for pressure pipelines; and in 2004, it passed the GB/T19001-2000 idt ISO9001:2000 standard quality management system certification.