Thank you for your quick reply.
Please let me confirm whether it is isolated case or not. We have to check all relevant COAs for each product lot and keep them from regulatory standpoint.
But actually, we only check the COA based on the mother product lot and regard the COA as same lot# for colorant and developer. Whenever you issue another COA with the different lot# in colorant and developer, could you please share the additional COA with us? We have no way to request it one by one since QA inspection in Japan is not for all batch.
Thank you for your cooperation in advance.