The valid period of certificate is two years.

证书有效期两年。

The valid period of the authorized issuers is one year.

已取得资格家数，系以一年内有效期间为计算基础。

Where the stipulated valid period of quarantine is exceeded.

超过检疫规定有效期限的。

Robert: How long is the valid period of "certificate of registration"?

罗伯特：《登记证》的有效期有多长？

Tenders with an ineligible valid period shall be rejected as non-responsive tenders.

投标有效期不满足要求的投标将被视为非响应性投标而予以拒绝。