Shin Dong Woo intends to acquire 60% stake in Nano Tuna Engineering Co.,Ltd from Zhejiang Tuna Environmental Science & TechnologyCo.,Ltd. (SHSE:603177) for approximately KRW 170 million on December 17, 2021. After the completion of this transaction, Zhejiang Tuna Environmental Science & Technology no longer holds shares of Nano Tuna Engineering. As of December 31, 2020, Nano Tuna's total assets of KRW 69.8 billion, Net Assets of KRW 43.2 billion, Operating Income of KRW 36.3 million, Net Profit of KRW 46.5 billion.

Shin Dong Woo completed the acquisition of 60% stake in Nano Tuna Engineering Co.,Ltd from Zhejiang Tuna Environmental Science & TechnologyCo.,Ltd. (SHSE:603177) on December 17, 2022 which is an estimated closing date.