Weihai Grand Exploration Instruments Co., Ltd. is located at the golden district of Weihai Hi-tech Development Zone. As the main products of Weihai Grand are vibration sensors, speed sensors, digital geophones, etc. Our company is an exploration enterprise integrating design, production, sale, aftermarket service and technical support. Our products are widely used in petroleum exploration, coal mining, exploration, road and bridge construction, dam and tunnel construction, heavy machinery vibration detection, earthquake monitoring, etc. Our products have been used by all oil fields in China at present and are exported to Europe, America, Africa, Southeast Asia and other countries and regions with the annual production capacity of 500,000 geophones and 50,000 pieces of telemetry cable.We will offer our latest technology, excellent products, reasonable price, and perfect service to provide the firm support for your business.