According to enterprise data, Langfang North Tianyu Electromechanical Technology Co., Ltd. was established on June 6, 2005, and its business scope includes technical development, production and sales of finishing machinery and related non-standard products and engine parts. Research and development and sales of abrasives and additives; Assembly, sales, technical consultation and technical service of R&D, explosion-proof products and automation machinery and electronic equipment; Software development; Information system integration service; Import and export of goods; House leasing. (Projects subject to approval according to law can only be operated after approval by relevant departments)