Gongyi Yulin Welding Material Co.,LTD, founded in 1998, is specialized in the research,development and production of submerged arc welding with sintering welding  flux professinal manufacturers of provinces,high and new technology enterprice. With 20 senior engineer of the research team. We owns 5 the domestic advanced productions lines,the annual production capacity of 525,000 tons equipped with welding chamber,laboratory,the inspection, the technology force is abundant,detection means is complete.Gongyi Yulin Welding Material Co.,LTD has passed the ISO9001 international quality system certificate .the products have scientific formulas,advanced technology,stability quality and good market prospects .YULIN brand series sintered welding flux have all excellent performance,welding steam beautiful appearance,slag easy to remove,strong anti rust and anti porosity ability  ,  stable quality .