The supply-demand structure of gold market and trend of gold price;

Anxiety about the severe situation of enterprise caused by big lowering of gold price and countermeasures adopted;

dollar became the main valuation currency,and had a momentous effect on gold price.

Reductive dechlorination of polychlorinated biphenyls by zero-valent metal;

Study on Reduction Transformation of Nitroaromatic Pollutants by Zero-valent Metal

Zero-valent metals can be used to treat many kinds of pollutants including Organohalides,heavy metal,nitro-aromatic compounds,azo dye,perchloride and nitrate etc.

The change characteristic and future tendency of world gold price;

Empirical study on international gold price affected by the fluctuations of RMB exchange rate;

Changes in the factors affecting international gold price and countermeasures;

Discussion on the recycling and reusing of valuable metals from spent batteries;

Recovering Valuable Metals from Red Mud Generation during Alumina Production;

According to properties of intermediate material in the zinc system and characteristics of the technological process, the paper proposes the ways and methods for comprehensive recovery of valuable metals like zinc, copper, cadmium, cobalt and silver, etc.