>>3222511>>3222494>>3222512>>3222514>>3222515>>3222517I found out what it means
>Environment Friendly Use Period (EFUP) is the period of time before any of theRoHSsubstances are likely to leak out, causing possible harm to health and theenvironment. Each product is labelled with a circle composed of two arrows containing a number that gives the EFUP in years; for example, a circled 10 indicates an EFUP of 10 years.https://en.m.wikipedia.org/wiki/China_RoHS