transposition ntauwd yog ib hom qauv ntawm lub zog hluav taws xob sib kis ntauwd.
khoom kom zoo dua
1.we tsim cov khoom raws li tus neeg yuav tsum tau muaj lossis specification.
2. khoom zoo yog siab heev, nws dhau ISO 9001 Quaility Management System.
3.galvanized qib mus txog qib siab thoob ntiaj teb;anticorrosion lav yog 20 txog 30 xyoo.