Taj Hardening Tunnel: We offer Hardener Tunnel: Specially designed arrangement to hard candy & ice-cream in very short time Robust & elegant aesthetically design. Efficient refrigeration system & chambers maintain a temperature even at working time. Automatically control of temperature defrosts system by especially programmable temperature controller. High density puff insulation with outer & inner cover in S. S Hardener Deep Freezer Static Type Hardener Forced Draft Type / Tunnel Type. Blast Freezer.