Ask the Builder: Cleaning the inside of a toilet tank
The parts inside a standard toilet tank make it difficult to clean. The fill valve, overflow tube, flapper valve and flushing ...
Ask the Builder: Best ways for cleaning the inside of a toilet tank
The parts inside a standard toilet tank make it difficult to clean. The fill valve, overflow tube, flapper valve and flushing ...
Science Daily5 天
New route to fluorochemicals: Fluorspar activated in water under mild conditions
Researchers have developed a new method to extract fluorine from fluorspar using oxalic acid and a fluorophilic Lewis acid in water under mild reaction conditions. This technology enables direct ...