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Here is the Web site of Dainippon Spring Co., Ltd. of Osaka, Japan where the video was made.
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More items to place on the list of those which will no longer be manufactured (or severely curtailed/rationed) in the energy-poor future planned for us by our betters. The list will be long and no aspect of life will be spared. I wonder what these are used for. Landing gear of wide-body airliners?
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When I saw them, the first thing I thought of was the springs in bogies (or wheel trucks) of railroad cars.
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