“Wecanassureyouthatourproductsareofthebestquality.”怎么翻译？

Ifyoucanmakeusafirmofferata______price,wewillplaceanorderwithyourcorporation.

Forthisreason,wecan’tbut.___yourproposal.

Weshouldbepleasedtosendyousomesamplesofournewtypewriteronapproval,______ourownexpense.

____shipment,pleaseamendtheL/Ctoallowtransshipment.