In April 2015, a client from Singapore placed an order to us on our Filter Bag to replace their bags. As a professional manufacturer of dust collector, we gave detailed information and quotation as soon as client offered the model of their dust collector and working conditions. So client ordered very soon and purchased 2 ytpes of our bag:Φ130*2450mm (218pcs) and Φ130*3050mm (1216pcs), with oil and warterproof polyester fiber needled felt.