The House voted 414-2 on 3 Sep 2026 to reject Senate amendments to the Clean Air Management Bill and set up a 20-member joint House-Senate committee to review it again. Disputed points that matter to businesses include the maximum industrial fine (currently proposed to fall from 50 million to 5 million baht), the PRTR pollutant-release register, and a deposit-refund scheme for pollution-prone products. Business and chamber representatives on provincial clean air panels are also contested. The Senate picks its 10 members at its 7-8 Sep meeting. The final law is not settled yet; factories and waste-handling businesses should watch the committee outcome.