1.ISO9001:2000 2..bright color 3.easily assembly 4.good resistance corrosion ... ,white,yellow,ect.Characteristics;goodresistancecorrosionandantioxidant,goodresistenceacidandalkali ,abeautifulandeasy , easily assembly; Don't fade in color,Feel comfortable,have a wide sphere of ... ,transportation fence decoration, protection facility. PVC coatde double circle fence (ISO9001:2000)