Cov teeb meem uas yuav tsum tau them sai sai rau hauv lub hlwv ntawm lub tshuab nqus tsev blister

1. Qhov loj ntawm daim npav daim npav thiab cov hlwv folded yog tsim nyog. Yog hais tias lawv muab tso rau nruj heev ua ke, daim ntawv daim npav thiab lub hlwv yuav deformed; yog tias lawv xoob dhau lawm, lawv yuav yooj yim cais.

2. Thaum cov khoom hnyav dhau lawm, nws yuav tsum tau txiav txim siab los kho cov ntawv daim npav thiab cov hlwv nrog staples ntawm ib qho chaw.