Hefei Huazai Waste Oil Recycling Co. According to the official website of Hefei Wah Chai Waste Oil Recycling Company Limited, Hefei Wah Chai Waste Oil Recycling Company Limited is a licensed, certified and legal business enterprise by the Ministry of Industry and Information Technology of the State, which is very reliable and legal, and mainly operates the recycling of waste oil from restaurant enterprises and industrial waste oil, and gutter waste oil cleanup and transfer. Hefei, referred to as "Lu" or "He", the ancient name of Luzhou, Luyang, Hefei, Hefei because of the East Interfluvial River and South Interfluvial River both originated in this and named.