Ngo-Oktobha olandelayo, i-Tianjin Youfa iya kuzimasa imiboniso ye-5 ekhaya nakwamanye amazwe ukubonisa iimveliso zethu, kubandakanywa umbhobho we-carbon steel, imibhobho yensimbi engenasici, imibhobho yentsimbi edityanisiweyo, imibhobho yentsimbi, i-square kunye ne-rectangular steel pipes, i-spiral welded pipes, i-spiral fittings kunye ne-scaffolding. izixhobo a...
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