I saw in the certificate of analysis, Izumi, IB no.1 and octokeep have the production date and expiry date but it don't show the lot number. By the way, the octokeep production date is September 5, 2014 and expiry date is 180 days from production date, means it's expired already. And in the Aluminum certificate of analysis don't have such information.
以下修正
私は Izumi、IB no.1、そしてoctokeepの品質証明書を見ましたが、製造日と消費期限がありましたが
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私は Izumi、IB no.1の品質証明書を見ましたが、octokeepは製造日と消費期限がありましたが