Jiangyin Zhongtai Technology Co., LtdExplosion proof vibration transmitter（ZT-YBF40）, Through the evaluation and certification of the National Explosion proof Electrical Product Quality Supervision and Inspection Station, and on July 26, 2010, obtained the Explosion proof Certificate issued by the station, with the Explosion proof Mark: ExnA IIT6 and Certificate Number: CNEx101582, laying the foundation for the product to successfully obtain coal safety certification.