... . high temperature resistant,long life usage 3.specially used in electron gun,etc. · FOB Price: US $50 - 80 · Port: Shanghai ... · Delivery Detail: 2-10 daysChengdu Yu Vacuum Electronic Materials Co., Ltd. founded in 2001, and was formerly known as Tungsten products ... are enterprise's life", Chengdu Yu Vacuum Electronic Materials Co., Ltd. welcomes and provides sincere service for customers from all over ...