VOLGAMID尼龙66阻燃系列 30%玻纤增强阻燃尼龙66 无磷环保 Technical data sheet VolgamidòPA66G30FRBK202 30%玻纤增强阻燃尼龙66 30% glass fiber reinforced and flame-retardant PA66 without PBDE 项目Ite