There are many reducers around us, but many users and purchases are not clear about the difference among them. How to classify the reducer today? Fubao as a professional reducers manufacturer, I will introduce you four different types of gear reducers to help you know more about them Gear reducers are mainly classified into four categories: 1. F series (French), 2. R series (Japanese), 3. S series (Soviet), and 4. K series (Canadian)....