Qhov rooj txee:
Cov qauv tseem ceeb tau txais ib lub txee ruaj ruaj los txhawb nqa lub rooj ncaj qha. Lub txee thiab thav duab
yog ua los ntawm 1.0-1.2mm zoo-zoo-rolled steel phaj, tsuag nrog epoxy resin, ntau xim
Yeem, ruaj.
Tub rau khoom rub:
Kev siv cov grooveated sib dhos lossis sus304 stainless hlau U-puab kov, tag nrho
tsos.