Nta yog steel hlau; Durable thiab tu: Hnyav, khoov thiab kaw, tiv taus txawm tias lub ntsej muag hnyav heev; Tsis muaj lub qhov muag tsis pom, qhov chaw pub khoom noj thiab kab mob tuaj yeem ua kom tsis muaj; Tsis muaj qhov txhab uas yuav ua rau xau; Cov.
