Grand Union for science and Technology Development Co Ltd   

Shenzhen City Granville cat invincible Technology Co. Ltd. is a set research and development, design, production, sales in one of the high-tech enterprises. Companies adhering to the "innovation and technology, quality of service promotion society" concept, combined with the Shenzhen Graduate School of the domestic first-class R & D institutions Tsinghua University Biomedical Engineering Research Center, jointly developed a series of modern digital electronic technology and the pressure to "the four pests of an ultrasonic technology" (rats, cockroaches, mosquitoes, flies) products, which greatly improves the "four pests" prevention and control of the industry level, the "four pests" control by way of using drugs, traditional chemical, health, environmental protection into the era of science and technology. ...