Dear KhunNok,
Refer to sticker as mention for purchase order, may I suggest that next time please discuss with engineer before release the artwork.
It will make more clearly for graphic designer also KhunLuan when we ask for quotation.
In this case the artwork is done but no body know that what kind material that we prefer then how purchasing to follow up the quotation !
It more complicate for KhunLuan to keep calling engineer for the material.
Anyway, sometime the artwork design is depend on the material as well.
Thank you in advance for your kind attention.
With best regards,