... Union· Place of Origin: Sichuan China (Mainland)· Brand Name: YU SHI· Metal materials: tungsten/wolfram· Certification: SGS report· Application: ... according to customers' requirements· Delivery Detail: 2-10 daysChengdu Yu Vacuum Electronic Materials Co., Ltd. founded in 2001, ... the concept of "Customers are enterprise's life", Chengdu Yu Vacuum Electronic Materials Co., Ltd. welcomes and provides ...