UkuFika okuTsha kwe-HC-21 yeBracket yokufunxa iSithuthi

1. Eyilwe nge-nano glue eqinile, intonga ezinzileyo kwaye akukho ukushiya umkhondo kanye ukususa i-bracket
2. Intsimi yamagnetic ezinzileyo, ukuhamba okukhuselekileyo, akuchaphazeli isignali yeselula
3. Ifanelekile kwi-4.7-7.2 intshi yeefowuni eziphathekayo, iphinda isebenze kunye necala lefowuni
4. Musa ukusebenzisa i-solvents yeekhemikhali ezinzima ukucoca, kuyacetyiswa ukuba usule ngetawuli yephepha okanye ngelaphu elithambileyo.