Total Waste Generation at Guan Tian Plant

• 2025: 22,825 metric tons
• 2024: 22,901 metric tons

 

Targets

Annual recycling rate to exceed 99.8%

• The waste recycling and reuse rate exceeded 99.8% in both 2024 and 2025.
• The waste classification and generation data for 2024 and 2025 at Guan Tian Plant have undergone limited assurance verification.

Ideas and Measures of Resource Recycling

To achieve our commitment to environmental sustainability, Guan Tian Plant uses a circulating fluidized bed (CFB) boiler that accepts a wide range of auxiliary fuels. In consideration of economic efficiency, corporate social responsibility, and the government's coal reduction policy, treated scrap tires are used as an alternative fuel. In 2022, the plant further increased its use of solid recovered fuel (SRF) as a boiler alternative fuel to effectively improve the utilization of resources while contributing as much as possible to society and the environment. To cope with high prices of coal and the government's coal reduction policy, Guan Tian Plant increased the use of SRF in 2022. Currently, the main types of SRF in the market are made from waste plastics, waste textiles, and waste wood. Guan Tian Plant obtained the combustion permit in April 2023, and the burning of SRF began afterward. In 2025, the Guan Tian Plant also obtained the solid biomass fuel combustion permit. That same year, Guan Tian Plant used 30,522 metric tons of scrap tires, 4,224 metric tons of SRF, and 554 metric tons of solid biomass fuel, achieving an overall alternative fuel (scrap tires + SRF) heating value substitution rate of 31.77%.
 

The list of major raw materials used by Guan Tian Plant is as follows (all are nonrenewable raw materials):

Methods of Waste Disposal

Wastes produced by Guan Tian Plant are non-hazardous wastes, including inorganic sludge, domestic waste, coal ash, wasted thermal insulation materials and wasted refractory materials. Guan Tian Plant recycles any recyclable waste such as coal ash, with a recycling rate exceeding 99.8%, while the unrecyclable waste is handled by qualified operators in accordance with relevant regulations of the Waste Disposal Act.