Tong Petrotech Corp. provides technical support and services for oil and gas exploration and development in China and internationally. The company also manufact...
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Oil and gas stocks plummeted at the opening, with XZPT, Beiken Energy, ZPEC, Blue Flame Holding, and several other stocks hitting the limit down, while Keli Co., Ltd., SINOGEO, and Tong Petrotech fell by more than 10%