Mann+hummel Life Sciences & Environment Holding Singapore Pte. Ltd. agreed to acquire a 70% stake in Suzhou U-air Environmental Technology Co.,Ltd. from Chongqing Zaisheng Technology Co., Ltd. (SHSE:603601) for approximately CNY 320 million on July 25, 2023. Chongqing Zaisheng Technology Co., Ltd. (SHSE:603601) board of directors and shareholders approved the transaction.