Dear Khun Songkram,
Thank you for your action to resolve the flooding causing the subsided area.
To slap the surface with concrete, we are also looking at this alternative as we plan to increase the capability of yard. However, the finalization is not yet decided. We will keep you update if we need the changes.
By the way, would you mind to provide us the quotation that you’re mentioned (850 THB/Sq.m)?