The anti-theft lock cylinder is one of the important accessories of the anti-theft door lock. In addition to the better anti-theft performance, a good anti-theft door lock cylinder is also a reference factor. Among the many lock cylinder materials, the all-copper anti-theft lock cylinder is the most durable and safe, so which brand of anti-theft door lock cylinder is of better quality and more durable? Lelang Hardware's big hoist full copper interior door European standard lock cylinder RCR-01 is a good choice. There are various anti-theft lock cylinder specifications and a variety of surface treatments, which are beautiful and practical.