Palladium is mainly applied to three Yuan automobile exhaust
control catalyst (platinum, palladium, rhodium catalyst), network
for chemical industry (platinum, palladium, rhodium catalyzed by
network three yuan), chemical plating palladium, palladium carbon
catalyst for catalytic hydrogenation, and palladium jewelry (Pd**0,
Pd**0). Palladium and ruthenium, iridium and copper, silver, gold,
palladium alloys melt into, in order to improve the resistivity,
hardness and strength and corrosion resistance.