johnson matthey platinum 9999

Thus, on the basis of this work J. Bishop in the U.S.A. and Johnson Matthey in Europe further developed the technology to successful commercialisation in the early 1960s (11, 12). Fig. 1 Hydrogen output for palladium and a number of palladium binary alloys, hydrogen pressure = 50 psi; temperature = 540°C harga emas hongkong 9999 hari ini