Most success stories: American General, the United States, Foxconn, Swell Marui Auto Parts Co., Futaba auto parts, Yuchao Auto Parts Co., Tongda Electric, Longhua mold, Jinfeng Group. Main components: Clamp Seal: NOK Japan solenoid valve: Japanese relay: Japan and the spring pressure tubing: Japan Yuken sensing elements: Taiwan Ming Wei PLC: Taiwan Yonghong pneumatic pump: Taiwan HUAYHONG overload protection device is installed for use in punch on the slider for detecting the hydraulic cylinder internal pressure overload. ? When the overload situation occurs, the hydraulic pressure can be quickly discharge within three thousandths of seconds. ? When overload occurs, the micro switch generates an electrical signal, emergency notification punch stopped to protect the punch and die. ? After overload occurs, the air-driven hydraulic pump, quickly make up the normal working pressure of the hydraulic cylinder, so punch can immediately normal operation. ? Internal overload protection device having constant pressure control valve, can automatically adjust the hydraulic pressure can be eliminated punch in the punching process, due to rising oil and sometimes did not produce the effects of pressure rise. Overload protection devices installed for use in punch for detecting slider cylinder internal hydraulic pressure overload, overload happens when a hydraulic pressure can be quickly released within three thousandths of seconds. Competitive characteristics: high quality, prompt delivery, diverse design, accept small orders.