Main material are stainless steel weave network, stainless steel frit felt, phosphorus copper network, brass network ,etc.
According to the appearance, they can be divided into round, waistshape, rectangle, ring, ellipse, etc. The rim can be copper that plates the nickel,aluminium or stainless steel and wraps up the side, the material layer counts have single layer,multi-layer, the company can also produce according to customer's demand