Liu Yu signed a share transfer agreement to acquire 2% stake in Dongguan Mentech Optical & Magnetic Co., Ltd. (SZSE:002902) from Yang Xianjin for CNY 43.3 million on November 24, 2021. As per the transaction, Liu Yu will acquire 4.2 million shares at CNY 10.304 per share. The transaction is subject to approval by Shenzhen Stock Exchange.