How is the quality of the doctor's hand mill sold in Pinduoduo?

Ok, authentic. The Bosch angle grinder sold in large quantities is genuine. Angle grinder, also known as grinder or disc refiner, is an abrasive tool for cutting and polishing FRP. Angle grinder is a portable electric tool that uses FRP for cutting and polishing. Mainly used for cutting, grinding and brushing metal and stone. The common models of angle grinder are divided into 100 mm (4 inches), 125 mm (5 inches), 150 mm (6 inches), 180 mm (7 inches) and 230 mm (9 inches) according to the specifications of accessories used, which are small sizes used in Europe and America.