BPA is used as an antioxidant in several fields, particularly in brake fluids. BPA is used as a developing agent in thermal paper (shop receipts). Recycled paper products can also contain BPA, although this can depend strongly on how it is recycled. Deinking can remove 95% of BPA, with the pulp produced used to make newsprint, toilet paper and facial tissues. If deinking is not performed then the BPA remains in the fibers, paper recycled this way is usually made into corrugated fiberboard. Ethoxylated BPA finds minor use as a 'levelling agent' in tin electroplating.