UK global speciality metals and chemicals company Johnson Matthey has reported a huge rise in the shortage of platinum available and a slight increase in the level of supply of palladium in the markets.Johnson Matthey PLC is a specialty chemicals company which manufactures pharmaceutical materials, catalysts, and pollution control systems. The Company also refines platinum, gold and silver, palladium and produces colour and coating materials for the glass, ceramics, tile, plastics, paint, ink, a...