in 2021, the company adhered to “basic plus high-end”, accelerated the construction of advanced production capacity, strengthened structural adjustment, extended the industrial chain and cultivated growth points. we continuously diversified raw materials, optimized structure and maintenance scheduling of facilities, and maintained high-profitable units’ utilization rates. we further integrated process of production, marketing, research and application, strengthened r&d efforts for highend products and new materials, and increased output of high value-added products such as metallocene polyolefin and carbon fiber. the production ratio of synthetic resin, synthetic rubber, synthetic fiber and fine chemicals with added value were increased by 1.0, 3.5, 1.6 and 3.0 percentage points respectively. the annual ethylene output was 13.38 million tonnes, representing a year-on-year increase of 10.9%. at the same time, we vigorously developed strategic customers and continuously improved the service level. the total operating volume of chemical products in 2021 was 81.6 million tonnes, realizing full production and sales.