Major problems in petroleum equipment manufacturing Difference of petroleum equipment manufacturing technology between China and foreign countries （1） Drilling equipment. The gap between Chinese drilling equipment...Major problems in petroleum equipment manufacturing Difference of petroleum equipment manufacturing technology between China and foreign countries （1） Drilling equipment. The gap between Chinese drilling equipment and that of other countries is still large in its quality and the application of high-level technology.展开更多
文摘Major problems in petroleum equipment manufacturing Difference of petroleum equipment manufacturing technology between China and foreign countries （1） Drilling equipment. The gap between Chinese drilling equipment and that of other countries is still large in its quality and the application of high-level technology.
