Car parking chains include 16ALT, 20ALT, 24ALT, and other special chains. ... . We produce Roller chains, Leaf chains, Hoisting chains, Lift chains, Car parking chains ( including 16ALT, 20ALT, 24ALT2, etc. ), Three-dimensional garage ... various non-standard Chain parts ( including roller, bush, pin, etc. ), Machinery parts (such as pulley, wheel, block, shaft ) and Punched parts ...