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On March 25th, 2016, Grobman obtained Utility Model Patent of Key Ninja. Patent No.: ZL201520171384.3
Release Date:2013-12-20
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On March 25th, 2016, Grobman obtained Utility Model Patent of Ninja Light. Patent No.: ZL201520171385.8
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On October 15th, 2017, Grobman successfully developed Key Ninja 2.0 and mass produced 20k. New version greatly improved on outlook, brightness and lifespan.