Between 1949 and around 1980.
Before the liberation, the development of China's gas business was very slow, by 1949, only nine cities in the country had gas facilities. And generally in the condition of obsolete equipment and backward technology, the population using gas is only 270,000 people. With the continuous development of metallurgy and petroleum industry after liberation. China's gas business has also been rapid development.
To 1965 onwards. Liquefied petroleum gas has been popularized and applied throughout the country. Reform and opening up of more than 20 years, is China's city gas development period. With the adjustment of the national economic policy, the state attaches great importance to the issue of energy and environmental protection, the decision to develop the gas business is included in one of the major technological policy, put forward the city to gradually gasification, for the development of the gas business provides positive support.
Expanded Information:
Precautions:
1. Gas canisters should be placed flat. The gas tank itself for metal products, on the one hand, the tank wall is relatively hard, not easy to break, on the other hand, once the tank wall is broken, as no professional knowledge we can not take timely and effective measures, do not know how to deal with correctly, and even at a loss. For safety reasons, placing the gas canister upside down on the flattest floor in the kitchen is the most appropriate practice.
2. Always be on the lookout for gas leaks. There are numerous accidents caused by gas, and most of them are caused by gas leaks. To check for gas leaks, paint with soapy water and do not use an open flame.
3. If you find a leak, first open the windows and doors to allow air to circulate, put out the fire, and then contact the gas company to have a professional come over to take care of the problem.
Baidu Encyclopedia - Gas Pipeline
Baidu Encyclopedia - China