Kev Tiv Thaiv Ntug Xim Av L-Profile Zoo Tshaj Plaws Hardness Tuam Tshoj L Zoo Li Daim Ntawv Tiv Thaiv Ntug Muag Zoo Tshaj Plaws

Kev Piav Qhia Luv:

Tus tiv thaiv ntug ntawv yog dab tsi?

Ib daim ntawv tiv thaiv ntug yog ib lub tes tsho lossis daim kab xev uas tsis hnyav thiab ruaj khov uas tsim los tiv thaiv cov ntug ntawm cov ntaub ntawv, phau ntawv, lossis pawg ntawv kom tsis txhob puas thaum tuav, khaws cia, lossis xa khoom. Feem ntau ua los ntawm cov ntaub ntawv xws li yas, ntawv cardboard, lossis ntawv txhawb nqa, nws tiv thaiv kev khoov, kev tawg, kev raug dej noo, thiab kev sib txhuam. Feem ntau siv rau hauv chaw ua haujlwm, cov ntaub ntawv khaws cia, thiab kev xa khoom, nws ua kom cov ntaub ntawv tseem zoo thiab zoo hauv kev nthuav qhia. Zoo tagnrho rau kev tiv thaiv cov ntaub ntawv rhiab heev lossis muaj nqis.