Different manufacturers have different prices in different regions, I here have some cooperation between manufacturers of some ex-factory prices, if necessary,
Because the crucible used to remove the crystallization of water heated to a higher heating temperature uniform
The existence of liquid, but the boiling point and the melting point of the pressure is not the same, under normal pressure only sublimation boiling point.
You are 26 ~ 30 content, Beijing haichangqing manufacturers reliable quality price is not high, you can go to their warehouse to see the goods, I have been to a
The global pattern is that all websites are accessed through proxies, including those that can be directly connected. The PAC mode is to go some of the sites to