The registered address of Tianjin Dianjing Technology Co., Ltd. is located opposite Zengbei Second Street, Limingzhuang Shopping Mall, Huaming Street, Dongli District, Tianjin (near the industrial park). The registration authority is the Market Supervision Administration of Dongli District, Tianjin, and the legal representative is Liao Wenfeng. The business scope includes the production and sales of ultrasonic cleaning equipment, electroplating equipment, coating equipment, filtration equipment, and environmental protection equipment; Stainless steel processing; Sales of chemical products (excluding hazardous chemicals and easily producible drugs); Installation and maintenance of mechanical equipment; Scientific research and technology service industry (projects prohibited by laws, administrative regulations, and decisions of the State Council shall not be operated; general business projects may be operated independently; licensed business projects shall be operated with approval documents and certificates); Labor services (excluding dispatch). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)