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Peb tus engineer tsim ib hom tshiab ntawm tsev cog khoom rau cov neeg ua liaj ua teb kub:

hom tsev cog khoom no muaj cov yam ntxwv hauv qab no:

1) muaj zog steel ncej, ua los ntawm kub dip galvanized round yeeb nkab

2) npog meej thiab lub neej ntev PO zaj duab xis

3) Kev tsim tshwj xeeb, muaj lub ru tsev qhov rais ua lub qhov cua, cia cov cua kub kom tshiab los ntawm lub qhov rais no.

4) Hom tsev cog khoom no tuaj yeem ua tau raws li qhov koj xav tau, qhov dav tuaj yeem yog 8m, 9m, thiab 10m, thiab ntev yog 30m thiab 40m.

Yog tias nws kub heev hauv koj cheeb tsam hauv cheeb tsam, peb xav kom lub tsev cog khoom no rau koj, yog tias koj xav tau cov ntaub ntawv ntxiv, thov hu rau peb.