filtering systems in the NRY-C which can ensure the NRY-C works continuously by batch. Environmentally friendly, no acid used during operstion. The filters in filtering systems are made of stainless steel. It can extend lifetime of filtering systems. Traditional filter is made of fabric or paper which need to be replaced frequently. So using stainless steel filter can largely decrease operation cost for customers. Exhaust gas removing systems can remove exhaust gas quickly and efficiently and make operation more environmentally friendly. Heat preservation material which can keep heating high efficient. Reducing operation cost. Design according to different customers needs including Turnkey Project. Purify blended oils, no matter the animal oil.