IEC 60721-2-7:20 18（E）解决了动植物的出现，包括其对电工产品的主要影响。动植物影响的暴露和损害几乎可能发生在产品生命周期的任何时候。此外，还有许多具有各种动作的攻击代理。 这第二版取消并取代了1987年出版的第一版。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: -这个版本已经完全重写。

IEC 60721-2-7:2018(E) addresses the occurrence of fauna and flora, including its main effects on electrotechnical products. Exposure and damage from the effects of fauna and flora can occur at almost any time in a product's life cycle. Moreover, there are many agents of attack with various actions.
This second edition cancels and replaces the first edition published in 1987. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- This edition has been entirely rewritten.