We offer Tantalum pentoxide with purity 99.5-99.9%. Any requirement, please contact to ... lanthanum rare earth Materials Co., Ltd. is located in Chengdu, Sichuan Province, China. It is a ... the field of high-tech. they are used in manufacturing magnetic resonance imaging device, the CT machine ... etc. And as the hydrogen storage alloy material in high-energy magnets ,electric vehicles and cell phone ...