SILHOUETTE GRAPHICS OF AN OIL PUMPING UNIT IN AN OIL WELL. IMAGE OF PUMPJACK IN THE SUNSET 石油 泵 pumpjack 石油泵向量 ILLUSTRATION.eps
SILHOUETTE GRAPHICS OF AN OIL PUMPING UNIT IN AN OIL WELL. IMAGE OF PUMPJACK IN THE SUNSET 石油 泵 pumpjack OIL PUMP VECTOR ILLUSTRATION.eps