Backing board ni hpe shani shagu gram lajang na matu, dai arung arai ni hpe madung tawn nna, hkrak hkrak galaw ra ai. Metal backing board ni hpe n-gun n rawng ai hpe ayan jep yu nna, anti-rust paint (shata kru shagu galaw na matu hpaji jaw ai) hte htu nna, oxidation a majaw n-gun n rawng ai hpe koi gam ra ai. Hpun hte galaw ai backing board ni hpe hkang lu ai hka lim ai lam (40-60% RH hpe hpaji jaw da ai) hpe tawn da ra nna, nli tum ni hpe n-gun jaw ai tsi hte tsi lajang ra ai. San seng ai shaloi, neutral detergent (pH 6-8) hpe lang nna, n-gun kaba ai hka jet (hpaji jaw da ai n-gun) hte ntsa hpe n-gun n rawng ai.<50 bar) or hard brushes. Avoid impact loads exceeding the load-bearing limit (e.g., <500 kg/m² for steel). Replace immediately if deformation exceeds 3 mm/m.
