Zibo Hanhai Electrical Equipment Co., Ltd. is located in Zibo High-tech Industrial Development Zone, which is a national high-tech zone established in 1992 with the approval of the State Council. Convenient transportation, developed information and modern infrastructure make it easier for us to communicate with users. As a high-tech enterprise with DCS and QCS automation control systems as its main business, the company takes science and technology as its foundation, survives by quality and wins the market by reputation. In addition to being widely used in China, its products are also exported to Southeast Asian countries such as Vietnam, the Philippines, Thailand and Indonesia, and have won praise from domestic and foreign users. In 2005, our company joined hands with the Automation Experiment Center of Zhejiang University to develop and research domestic DCS systems, and developed the fourth-generation APC4 (DCS) control system, which made outstanding contributions to my country's automation control t