On 6 January 2022, Thai Institute of Directors (IOD), as the secretary of the Coalition of Thai Private Sector Collective Action Against Corruption (CAC), announced the renewal of the CAC membership certificate for SMPC. This is the second consecutive 3-year period for SMPC after the first membership period in April 2016. This collaboration with CAC reflects the company’s directors, management, and the employees’ intention to support the anti-corruption actions and measures in the past and the future.