Jiangsu HLM’s position as the Chinese leading paper suction roll supplier has been developed over 20 years and our continuous focus on research and development keeps us at the top. Having supplied over 2,000 suction rolls over the past 20 years, our expertise in suction technology is unrivaled. HLM’s suction rolls provide high performance solutions for a variety of machines.We have the best cnc gun drilling machine in china.