What's the difference between cosl and CNOOC Engineering?

As far as the industries in which cosl and CNOOC Engineering are located are concerned, the company's attributes are basically homogeneous, and there is no big difference in essence. As two large professional offshore oil service companies under CNOOC, investors are puzzled by the different treatment in today's capital market. The only thing that can be explained is that my brother's offshore oil project has long been taken, and I'm afraid that if a third party wants to get their hands on it, it will inevitably be "beaten", while my brother cosl has just listed, and she belongs to the lovely girl of Huanghua, and everyone is scrambling for preconceptions. . . So it caused the obvious contrast now. . .

Cosl and CNOOC Engineering were originally formed by the merger of ten professional companies of China Offshore Oil Corporation. Seven of them were merged into today's cosl, and three were merged into CNOOC Engineering. Both companies are engaged in offshore oil field services. Cosl mainly provides drilling, exploration, ship and oilfield technical services, while CNOOC Engineering focuses on the design, construction and installation of offshore drilling platforms. Both companies also benefit from the boom cycle of the whole oilfield service industry. As the parent company, CNOOC is the biggest customer of the two companies' business and contract orders. The palm of your hand is full of meat, and parents will give food to their two children. . .