What grade does Huai 'an Xinya belong to?

Middle and high grade. According to Tianyan, Huai is an enterprise integrating mechanical manufacturing, cold and hot processing, investment casting, scientific research and production. It has complete production equipment, complete physical and chemical tests and testing methods, a modern water pump performance testing center, and computer management of product design and process control. Therefore, it can be considered that Huai 'an Xinya belongs to middle and high-grade wine.