The camlock consists of locking pin and locking arm on opposite edges. It is all plastic or steel and has great strength and no complicated ribs are needed.   The camlock is inlaid into panels during foaming. The panels can be connected closely when you turn clock-wise the camlock by special tool which is provided with the cold storage. To expand the volume of cold storage, you can simply remove the panel where size increasing is desired turning the camlock back from our works. It is easy to enlarge prefab cold-storages quickly.
At the same time, we can produce according to your given drawings or samples.