1. Amohela thepa e thibelang malakabe, e bolokehileng haholo.
2、Ts'ebetso e phahameng, konopo ea PC, lesale le sa keneleng metsi la silicone, khetla ea tšepe e sa ruseng, e thibelang ho bola le e thibelang lerōle
3. Tšebeliso e pharaletseng.
Lihlahisoa tsena li ka sebelisoa indastering ea thepa ea ka tlung, lipalangoang, lisebelisoa tsa polokeho, lisebelisoa tsa ntlo, lisebelisoa tsa bongaka, lisebelisoa tsa elektroniki, sethatho, taolo ea phihlello le tse ling.