Joalo ka mechine e meng e mengata, mochine o pholileng oa metsi o pholileng ka moea oa UV le oona o hloka tlhokomelo e tloaelehileng. Ka tlase ke malebela a tlhokomelo.
1. Etsa bonnete ba hore phaephe ea metsi e hokahane hantle;2. Qoba ho sebelisa sehatsetsi sa metsi se pholileng moeeng ntle le metsi 'me ka kopo eketsa metsi a hloekileng a hloekisitsoeng kapa metsi a hloekisitsoeng e le metsi a potolohang;
3. Etsa bonnete ba hore sehatsetsi se na le nako e lekaneng ea ho lokisa ts'ebetso ea sehatsetsing (hangata metsotso e 5) 'me u qobe ho se bulela le ho se tima khafetsa.
Mabapi le tlhahiso, S&A Teyu e tsetetse lisebelisoa tsa tlhahiso tsa li-yuan tse fetang milione e le 'ngoe, e netefatsa boleng ba letoto la lits'ebetso ho tloha likarolong tsa mantlha (condenser) tsa chiller ea indasteri ho ea ho welding ea tšepe ea lakane; mabapi le thepa, S&A Teyu e thehile matlo a polokelo ea thepa metseng e meholo ea Chaena, e fokolitse haholo tšenyo e bakoang ke thepa e tsamaeang sebaka se selelele, le ho ntlafatsa ts'ebetso ea lipalangoang; mabapi le tšebeletso ea kamora thekiso, nako ea tiisetso ke lilemo tse peli.
