Tag Archives: malleable iron fittings supplier

Year 1982, Hebei Jianzhi Casting Group Ltd. formerly named Tangshan Malleable Iron Plumbing Industrial Co., was founded in 1982.  Year 1994, Jianzhi invented “Chain Type Quality Management Method” and obtained “Enterprise Management Modernization Innovation Achievements Second Prize ” issued by Ministry of  Agriculture Year 2002, Passed ISO9001 quality management system certification Year 2007, developed the first generation Leak Tightness Testing Machine Year 2007, Jianzhi malleable fittings are usedContinue reading “Development History”