Concav & Convex Lens nrog kev muag zaub

E14.0502

Cov lus piav qhia luv luv:


Khoom Nthuav dav

Cov khoom lag luam

Teeb ntawm 2, Dia. 100 hli, nrog sawv


  • Yav dhau los:
  • Tom ntej:

  • Sau koj cov lus ntawm no thiab xa rau peb