<正>The crude production of Petro China Daqing Oilfield has been accumulated to 1.95 billion tons following nearly five decades of intensive exploration and hig
<正>Shell China Limited’s Executive Chairman Lim Haw Kuang is unquestionably an effective reformer for the Beijing-based company. He localized Shell China Limi
<正>Greatwall Drilling Company (GWDC), an integrated petroleum engineering services company, mainly provides general contracting services of well construction f