Xinhua News Agency, May 9, Zheng Shang now announces matters related to the thermal coal futures 2405 contract as follows: the trading margin standard is 50%, and the limit is 10%. If the trading margin standard and the limit of rise and fall implemented in accordance with the rules are higher than the above-mentioned standards, the original provisions shall still be followed. The maximum number of non-futures company members or clients who open positions in a single day is 20 lots.