Foreword

Initially loss in weight screw feeders began in 2002, after four generations of technological innovation and breakthroughs, feeders have been sold to more than 4,000 units around the world. 

Loss in weight screw feeders is integration of precise mechanical, electrical, electronic and software control devices. 

Sonner has a full range of independent design, intellectual property rights in these four aspects, which are embedded in feeding screw design and manufacturing,

DC brushless motor and gear transmission reducer design, weighing measurement hardware and software development. 

Sonner has 20 years of practical experience in the control software, hardware design, and manufacture of the loss in weight principle, as well as the design of anti-bridge and screws conveying various powders