hat
1. Anti-korozyon tretman: purlen Estati ta dwe kouvwi ak yon kouch de penti abazde anti-rouye ak de kouch nan fini penti. Purlen Bwa ta dwe kouvwi ak anti-korozyon oswa lwil asfalt.
eng
1. Anti-corrosion treatment:Metal purlins should be coated with one layer of anti-rust paint and two layers of finishing coatings. Wood purlins should be coated with anti-corrosion or asphalt oil.