About Us
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Zhoushan Howly Screw Co., Ltd is one of the largest manufacturers, specialized in researching, designing and manufacturing high precise screws, barrels and other accessories for plastic & rubber processing machines. 

We strictly select high-quality alloy steel (38CrMoAIA, SKD11, SKD61) to produce screws and barrels. Our products have features of high precision, wear resistance and corrosion resistance through heat treatment, Nitriding treatment, Hard-chrome electroplating, Bimetallic alloy welding and other processing ways. 

With quality policy of "quality first, customer uppermost, scientific management", we are dedicated to pursuing high quality products, effective work and perfect after-sales services. We always give top priority to customer benefits, because we deeply believe that customers' success is our success. 
Our products have been distributed to Europe, America, Oceania, Asia, Africa, the Middle East, etc. We will make more efforts and continue to provide perfect quality and services for our customers.