Ebe a na-veranda nke Guoxin aluminum alloy ọkpọkọ na tubing, e nwere 1000 usoro aluminum alloy tubing, nakwa dị ka 2000 series, 3000 series, 5000 series, 6000 usoro na 7000 usoro aluminum alloy ọkpọkọ maka ndị ahịa.
