Zhende Fushan is the sixth floor, 12 floor, increasing step by step. According to the law of civil law, for high-rise buildings, a master valve is added every 6 floors. Don't touch it without authorization, it may be dangerous. The gas pipeline is installed on the first or second floor, and the main valve will also be installed here. Gas is the general name of gas fuel, which can be used for residents and industrial enterprises to burn and release heat. There are many kinds of gas, mainly natural gas, artificial gas, liquefied petroleum gas, biogas and coal-based gas.