Mechanical equipment research and development;R&D of power distribution switch control equipment;Manufacturing of special equipment for plastic processing;Sales of special equipment for plastic processing;Mechanical equipment sales;Plastic product manufacturing;Sales of plastic products;Rubber products manufacturing;Sales of rubber products;Electronic components and electromechanical assembly equipment manufacturing;Sales of electronic components and electromechanical assembly equipment;Mechanical and electrical equipment sales;Mould sales;Sales of machinery parts and components;
