年北京納盛通公司(

张振荣一行赴公司半山基地调研指导工作

basfwillunveilultramidflexf–anewcopolyamidethatoffersgreatertransparency,increasedsoftnessandimprovedtearresistanceevenatlowtemperaturesforthepackagi

ultramidflexf38lisanent