A na ua tseba ka sekhutlo se sehang?

Hangata, re ka reka mefuta e 3 ea sehahi
30degree/45degree/60degree angle' marakeng.
Lisebelisoa tse thehiloeng ho vinyl (lisebelisoa tse thata) li sebelisa sehahi sa 60degree angle,
Lisebelisoa tse thehiloeng ho PU (lisebelisoa tse bonolo) li sebelisa sehahi sa li-angle tse 30.o