How long does it take for Chengdu gas bill to be issued?

The bill for gas in Chengdu is 1-5. According to official website information of Chengdu Gas Company, Chengdu Gas Company will calculate the gas cost of the current month according to the gas consumption from the first day to the last day of each month. Then at the beginning of next month, that is, around 1-5 every month, the gas bill of last month will be sent to the official address of the user.