About products and suppliers
921 a4 portfolio ring products are offered for sale by suppliers on Alibaba.com, of which filing products accounts for 75%, notebooks accounts for 17%.
A wide variety of a4 portfolio ring options are available to you, such as pu, pp plastic and plastic pp.You can also choose from silver, gray a4 portfolio ring,as well as from l shape, rectangle, and round a4 portfolio ring,