... synthesis process, and it employs the intelligent pneumatic instruments and the manual valves to realize the double loop control. Moreover, the ... silence, tetramethyl-lead and methyl cellulose. It can also be used to make dichloromethane, chloroform, carbon tetrachloride and methyl chloride silane, ... as well. In the medical application, it can be used for local anaesthetization, and in a few cases, it ...