I have superior production equipment, and provide proof of a variety of products.

我公司拥有精良的生产设备，并提供各种产品的证明。

If appointed, can you provide proof of identity and legal right to work in U. S. A. ?

如受聘后，您能出具在美国能合法工作的证明吗？

Authorities asked them to provide proof of migration from 1971 to 1986, but what about the people who came here after 1986?

当局要求他们提供1971年至1986年的移民证明，但1986年后来到这里的人呢？

Scour auction web sites for great deals. Concentrate on established sellers with good feedback that provide proof of authenticity to avoid buying knockoffs.

查找拍卖网站来找一些物美价廉的单品。集中在顾客反馈比较好的，有正品保障的卖家，避免买到水货。