Group 1 - The company currently has a total SAF production capacity of 50,000 tons, with an additional 160,000 tons per year from a new project [1] - The company has begun supplying SAF to domestic customers, specifically China National Aviation Fuel Group, while also preparing for international sales [1] - The gross profit margin for SAF is not explicitly mentioned, but the company indicates a strong demand for its products, particularly from overseas clients [1]