Successful Reverse Roadshow Organized by COSL

COSL s A-shares have been successfully listed. In order to help investors in the PRC better understand the Company s business and technical developments, COSL organized a reverse roadshow on December 11, and 18 investors from the PRC attended.

This roadshow, being the first reverse roadshow since COSL s A-share listing, was highly regarded by the Company s senior management. Mr. Chen Wei Dong, Executive Vice President, CSO and Company Secretary, went with the investors to visit COSL s BH8 drilling rig which was under checkup, as well as Screen company and LWD workshop.

With the strong support of the drilling department, well services department and oilfield production department. From preparation of materials to logistic support, every detail of the event has been well taken care of. Senior manager of these three departments, gave investors thorough introduction about the equipment and technologies, and answered questions raised by investors.