[Good News] All trench fittings of Jianzhi Group have passed UL certification in the United States


Warmly congratulate Jianzhi Group trench pipe fittings all successfully passed the U. S. UL certification! Up to now, all 18 varieties and 258 specifications of grooved pipe fittings of Jianzhi Group have passed the certification, which indicates that Jianzhi Group has successfully entered a newer and higher platform.