2002.5:Foundation of Chemical General Factory Zhejiang Yule chemical Technical cooperation with Shanghai Research Institute of Chemical Industry lead based PVC stabilizer
2008:Foundation of WSD chemical limited. Produce metallic stearate, lead based one pack PVC stabilizer
2010.10:building chemical foaming agent prduction base in Neimeng
2012:With China's outstanding PVC additive manufacturers build a most complete Additive PVC additive one-stop service base
2015:WSD chemical limited Bangladesh office builded
2016:WSD chemical limited Pakistand offer builded