Big C Supercentre and Cencarre (the company that runs Carrafour in Thailand) have admitted they charge slotting fees to carry manufacturers' products. According to a report in Krungthep Turakij, a subcommittee investigating alleged unfair trade practices heard testimony from the two companies on Monday. The subcommittee chairman said the committee was not satisfied with the responses given by Big and Carrefour because they had failed to produce sufficient information to answer the questions in detail. They have been ordered to provide further information in written form.