PetroChina Company Limited (601857.SS) Stock Analysis & Winston Score

PetroChina is one of the largest oil and gas companies in the world. It explores for oil and natural gas underground, refines crude oil into fuels like gasoline and diesel, and sells those fuels to consumers and businesses across China. It also runs pipelines and sells chemicals made from oil and gas. The Chinese government, through its parent company CNPC, owns a controlling stake in PetroChina. PetroChina makes money by selling oil, gas, refined fuels, and petrochemicals — both at the pump through its retail stations and in bulk to industrial customers. It operates mainly in China but also has assets in Central Asia, Africa, and other regions. Its massive scale, government backing, and control of key pipeline infrastructure give it a strong position in China's energy market. The biggest risk it faces is falling global oil prices, which can quickly squeeze profits since its costs stay relatively fixed even when energy prices drop.