Safe Mix Concrete Products Limited announced that Mr. Asim Tiwana and Mr. Nadir Ali have resigned from the office of the directorship of the company due to personal reasons with immediate effect and Mr. Shahid Aziz Siddqul, Mr. Khalil Ahmed and Mr. Syed Najmuddjah Jaffri have been appointed as directors of the company with effect from Feb. 28, 2015.