... advantages of the company's previous XH50TZ-A4 perfect book binding machineXH50TZ-A4 perfect book binding machine can bind 40mm thickness. ... Enterprises.Main performance:1. made of better structural section, the binder is solid, steady, durable, andpleasing to the eye.2. ... having human feeling style interface design with trouble prompt, the binder issimple and convenient for operaion, and easy to be ...