Rainbow Chemicals: Controlling shareholder Xu Huixiang plans to reduce holdings by no more than 3%.

Rainbow Chemical Announcement: The actual controller and chairman Xu Huixiang holds 48.26 million shares, accounting for 12.09%. Due to capital requirements, will reduce holdings through centralized bidding from May 22, 2026 to August 21, not more than 3.9912 million shares, and through block trading not more than 7.9823 million shares. The source of the shares is from pre-IPO shares, shares issued to specific objects, capital reserve fund allocation, and equity incentive shares, with the reduction price reference to the market price at that time; this reduction is consistent with previous commitments.