From 8^th to 9^th April, 2008, Mr. Chen Jingkui, the manager of Bohai No.1 Drilling Company of CNPC, and his two colleagues visited 3H company. They examined the two ZJ50JDB rigs which were in process of being assembled in the rig yard. And they also watched the rising process of the 3rd rig which took only 6 minutes for the whole progress. Mr. Chen and his colleagues gave a high appreciation for the design and quality of these rigs.

According to the plan, these three rigs will finish delivery by the end of this month. And it is reported that two of them will work in Mongolia.