Lichi muaj cov tshuaj pwm tsawg tshaj plaws, thiab peb cov khoom lag luam pwm dav dav muaj ntau yam kab noj hniav, cov duab thiab cov tshuab cam txav.Thaum koj cov khoom molded tau sib xws nrog cov cuab yeej zoo li no, peb muab cov pwm pwm no pub dawb kom haum rau cov neeg siv khoom cov cuab yeej hauv lub sijhawm ua haujlwm.