Sinopec is the largest supplier of oil and petrochemical products and the second largest oil and gas producer in China, and also the largest refining company and the second largest chemical company in the world. Its total number of gas stations ranks the second place in the world. In 2017, it ranked the third on Fortune's Global 500 list. Its main products are petroleum crude oil, natural gas, chemical fiber, fertilizer, rubber and oil products etc.

PetroChina is the largest producer and supplier of crude oil and natural gas in China. Its scope of business covers petroleum and natural gas exploration and development, oil refining and chemical engineering, pipeline transportation, sales of oil and gas refining products, petroleum engineering technology services, petroleum machinery processing and manufacturing and petroleum trade etc. It plays a leading role in the production, processing and sales of petroleum and natural gas in China.

The company is a qualified supplier of PetroChina and Sinopec, and provides the petrochemical industry with reliable and high-quality control valve products under special working conditions that can substitute those imported similar products.