Erw chitoliro mphero, erw chubu kupanga makina fakitale-ZTZG

ZTZG ndiye wopanga wamkulu waERW PIPE MILLmakina ku China, akudzitamandira R&D yakeyake, kukonza, ndi zoyambira kupanga. Inakhazikitsidwa mu 2000,ZTZG yakhalapo kwa zaka 25. Zogulitsa zake ndizokhazikika, zodalirika, zatsopano, komanso zaukadaulo, zomwe zimakuthandizani kuti musunge ndalama zambiri zogwirira ntchito ndikuwongolera magwiridwe antchito.