Group 1 - The company has established a long-term partnership with Doosan Group, primarily acting as an agent for the sales of materials such as PP, FCCL, NWB, and hard boards [2] - The overall sales volume and transaction amount related to this partnership are not significant [2]

Group 1 - The company has established a long-term partnership with Doosan in South Korea, primarily acting as an agent for the sales of Doosan's materials such as PP, FCCL, NWB, and hardboard [2] - The overall sales contribution from this partnership is relatively small [2]