According to the Sanfeng Environmental announcement, the company plans to use 100 million yuan of its own idle capital to purchase the “Southwest Securities Earnings Certificate Huifeng 2025003” fixed income certificate issued by Southwest Securities for a period of 3 months, with an estimated annualized yield of 1.9% and revenue of 475,000 yuan. Since Southwest Securities is a related party, this transaction constitutes a related transaction. It has been approved by the relevant meeting and does not require review by the shareholders' meeting. In August 2025, the company purchased 100 million yuan of similar products and recovered the principal amount and 475,000 yuan of revenue at maturity. There have been no other related financial transactions in the past 12 months.

According to the Sanfeng Environmental announcement, the company plans to use 100 million yuan of its own idle capital to purchase the “Southwest Securities Earnings Certificate Huifeng 2025003” fixed income certificate issued by Southwest Securities for a period of 3 months, with an estimated annualized yield of 1.9% and revenue of 475,000 yuan. Since Southwest Securities is a related party, this transaction constitutes a related transaction. It has been approved by the relevant meeting and does not require review by the shareholders' meeting. In August 2025, the company purchased 100 million yuan of similar products and recovered the principal amount and 475,000 yuan of revenue at maturity. There have been no other related financial transactions in the past 12 months.