The YIYA vaccum system is designed for fabrication of high-quality neon tube or cold cathode tube. Object:The medium and high grade's first manufaturer,the regenerator of old fashioned equipmentFeature:Economical use,polytechnic index maturityConfiguration: Vacuum pump,vacuum instrument,temperature-control instrument,cylinder gas,stainless stell's valve and pipe.Explanation:1. Diffusion pump's ...