4DWGRZ series, controlled by proportional electromagnet, are pilot operated proportional directional valves which translate the electrical signals into the hydraulically signals. It is used to control the liquidity flow and direction. 4DWGRH series, controlled by proportional electromagnet, are remote control operated proportional directional valves. 4DWGRH principle and function is the same as 4DWGRZ
Ningbo Racer Trade Co., Ltd., is a professional manufacturer and exporter of sliding door&window hardware, wire craft of daily commodity, bearing, garden light, hydraulic valve, plastic product, PE pipe, electrical appliance and wire.
Our factory produces hardware of door and window, especially in producing pulley/roller for sliding door&window, such as hang pulley, folding-door roller, sigle/double axles pulley, aluminum bracket pulley, shift door pulley, garderobe door pulley and so on. We also produce locks and other accessories of doors and windows. The factory owns advanced manufacture and inspection equipment as well as rich technical forces. We apply ourselves to quality management for perfecting production and technology renovation for development. Our products are exported to more than 40 countries and areas like North America, South America, Europe, etc.
We can also produce special metal or plastic product according to your requirements.
