1, stable in air and humid environment at room temperature, resistant to corrosion by hydrofluoric acid, phosphoric acid, perchloric acid, hydrochloric acid and sulfuric acid vapor.

2. Palladium was discovered from platinum ore by British chemist wollaston in 1803. It is a chemical element and a precious metal, which is more expensive than platinum (platinum) and is often used as alloy material, catalyst, jewelry and so on.

3.MT4, the abbreviation of MetaTrader4, is a customized quotation receiving software released by Majdak Software Company for financial intermediaries, aiming at providing financial intermediaries and customers with trading information of financial products such as foreign exchange, contracts for differences, stock and futures markets.

4.MT4 can query the prices of gold, silver, foreign exchange, stocks and futures. At the same time, simulate trading.