... and ODM are welcome. heavy duty square zinc alloy padlock 1. Material: zinc alloy2. Packing: double blister or sliding card or box ... , combination padlocks, waterproof padlocks, rectangular padlocks, disc padlocks, laminated padlocks, square padlocks, hammer padlocks, camel padlocks, lock cylinders and so on ... with many overseas countries with a high reputation. heavy duty square zinc alloy padlock