According to CONCH’s quarry development, in order to learn more on limestone quarry mining machine, International Business Department invited LIEBHERR Machinery Service (Shanghai) Co., Ltd. to have a technical exchanges in conch building on 27th March 2007. Members from Supply Department and Quarry Supervision & Administration Committee participated the meeting. Two parties have widely and friendly discussed on LIEBHERR’s excavator and wheel loader,as well as their applications.