I-1.Ipeyinti esemgangathweni ophezulu, usebenzisa ukushisa okuphezulu, i-asidi eqinile, i-phosphating, i-putty, i-spraying kunye nezinye iinkqubo ezichasene ne-rust, ukuqinisekisa ukuba imveliso nganye inokumelana nokukhukuliseka kwemvula. ukusetyenziswa, rugged ngaphezulu.3.Ukhuseleko ngokuchasene ubusela, kuphela ...
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