The Competition Commission of India (CCI) has slapped a fine of Rs 6,704 crore on cement companies for unfair business practices. The company has slapped a penalty of Rs 6,307.32 crore on 11 cement firms while it had imposed a penalty of Rs 397.51 crore on Shree Cement Ltd in the second matter, Corporate Affairs Minister Sachin Pilot said in a written reply to the Rajya Sabha.