RoHS - this is just a type of conformity.
RoHS-是一种表示合格的标记
This just needs to indicate that the product is RoHS compliant of left blank.
它表明此类产品符合左侧的RoHS（应该是一种检测程序）
The word RoHS could be substituted for a green tick as long as at the bottom of the page the tick is identified as meaning RoHS
单词RoHS也可以用 产品包装低部的 绿色小勾 图案来替代,其代表意思不变