How to say “Those duplicate receipts can go through the document shredder, but shred the customer copies separately.” in Japanese
In Japanese
その控えはそこのシュレッダーでいいけど、お客様用の分は分けてシュレッダーにかけてね。
Sono hikae wa soko no shureddā de ii kedo, okyakusamayō no bun wa wakete shureddā ni kakete ne.