Ndife apadera pakupanga mapaipi achitsulo a Welded & Tubes. Tikupereka atha kufikira muyezo wapadziko lonse lapansi monga: ASTM, JIS, DIN, EN, API, BS, Kupanga kwamakampani athu kumachitika molingana ndi TS EN ISO 9001:2000, API5 L, ISO 14001:2004 ndi ISO9001,SGS Integra. ...
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