求翻译：按规定期限抽检产品是什么意思？

Product sampling by the deadline

Sampling products deadlines

End product storing must control the storing temperature, prevents the ultra warm deterioration; Maintains the storehouse health, the product stack is neat; The open-air stack product adopts windproof according to the stipulation, guards against exposes to the sun, rainproof, guards against the snow

According to the prescribed period sampling products

According to the prescribed period sampling products