Champion Aerospace
May 12, 2017·14. Added “Yokohama Metal Co Ltd” as a gold refiner 15. Added “CNMC (Guangxi) PGMA Co., Ltd.” as a tin refiner 16. Added “Conghua Tantalum and Niobium Smeltry” as a tantalum refiner 17. Removed “Tantalite Resources” as a refinery 18. Added “Minmetals Ganzhou Tin Co. Ltd.” as a tin refinery 19.