Cov khoom

Rectangular steel tube nrog rau qhov txias-tsim hollow seem, niaj hnub phab ntsa thickness, zoo fabrication kev ua tau zoo, thiab npaum lub zog-rau-hnyav kev ua tau zoo.

Loj lub kaum sab xis steel raj nrog lub siab-lub zog hollow seem, muaj zog dabtsi yog khoov muaj peev xwm, thiab customizable anti-corrosion ua rau hnyav structural tej yaam num.