We keep improving and perfecting our products and service. At the same time, we work actively to do research and development for China Merv 6 Filters and HVAC Filters, , , ,. We've been glad that we have been steadily escalating using the energetic and long lasting assist of our pleased shoppers! The product will supply to all over the world, such as Europe, America, Australia,Spain , Swiss ,Los Angeles , Bangladesh .Only for accomplishing the good-quality product to meet customer's demand, all of our products have been strictly inspected before shipment. We always think about the question on the side of the customers, because you win, we win!