Dear Jaruwan,
We did a thorough check on all items received so far (600 pcs) to find all unacceptable ones(5 pcs) and here with some issue(japanning and pinhole) to discussed with you , please noted that shown in the areas marked in red as attachments.
Please make improvement on QC inspection prior to every future shipment to reduce or avoid deffective products.
Thanks for your attention !
BEST REGARDS