SizeFa ishlab chiqaruvchi tomonidan po'lat mahsulotlari
Sizfa guruhi - bu ERW po'lat quvurlari, spiral payvandlangan quvurlar, g gavanizatsiyalangan po'lat quvurlar, zanglamaydigan po'lat quvurlar, armatura va iskala kabi mahsulotlarni ishlab chiqarish va sotishni birlashtirgan yirik korxonalar guruhidir. Nine production bases have been established in Tianjin, Tangshan, Handan, Hancheng, Shaanxi, Liyang, Jiangsu, Huludao, Liaoning, Yuxi, Yunnan, Linquan, Anhui, and Weifang, Shandong, with 293 production lines and 4 nationally recognized laboratories, 1 Tianjin Welding Steel Pipe Technology Engineering Center, and 2 Tianjin Enterprise Technology Markazlar.