Preserved eggs, also known as pine eggs or egg, can not only increase appetite, promote digestion and absorption of nutrients, but also cool, blood pressure and other effects, processed by lime, salt, edible alkali and so on. According to an industry insider in Nanchang, Jiangxi, many locally produced preserved eggs were marinated with industrial copper […]

Copper sulphate, containing 25% to 35% copper, can be used to kill fungi. Copper sulphate aqueous solution has strong bactericidal effect. It is mainly used for controlling various diseases such as fruit trees, malt, potato and rice in agriculture. The effect is good, but it has poor effect on rust and powdery mildew. However, copper

1. A copper anode with a phosphorus content of 0.030?0.075%, the black film is moderately thick, the structure is fine, the combination is strong, and it is not easy to fall; the copper anode with excessive phosphorus content before the danger. Phosphorus is unevenly distributed, so that the anode mud is excessively dissolved, thereby contaminating