... housing, design in small size, steady running, low noise, high efficiency. Low price........ We are the leading manufacturer specialized in ... low noise,high efficiency3. The products have been mainly used in light industrial fields, such as foods, beverage, pharmaceutical, leather, printing, packaging ... reduction ratio: up to 6177:1(two-stage)+Noise of speed reducer: ≤50dB;+Backlash of speed reducer ...