Laser engraved environmentally phooj ywg nplooj ua lag ua luam daim npav

Daim npav "daim nplooj" yog tsuas yog kos duab ntau yam nplooj thiab qauv nrog cov nplooj ntuj los ntawm laser. Lub tshuab laser no tsis muaj dab tsi tshiab thiab tau siv ntau qhov chaw. Daim npav ua lag luam no yog cov phooj ywg ib puag ncig, ntuj thiab tsis muaj kuab lom, thiab muaj cov yam ntxwv zoo saib. Nws kuj yog qhov zoo heev rau bookmarks.