The 2020 drilling Dept. cementing Technology Seminar of China Petroleum Society was held in the ancient city of Xi 'an On November 5, 2020.  Mr. Zeng was invited to give a speech on "the application of high-performance hollow glass microspheres in low-density cementing slurry" at the Summit.

At the conference, the oil & gas industry generally recognized the trend that hollow glass microspheres will widely replace cenospheres in cementing slurry in future.