About Us

About Us

Patents

Patent List
Separate smoke-exhauster patent
Thermal insulation shoes patent
Noise-attenuation earphone patent
Magnetic black-board patent
Helmet patent
Enclosed vibrator simulator patent
Dry-wet use spoon patent
Two-color magnetic white-board patent
Reciprocated motor patent
Rear-view patent
Spinning dining plate patent
DC oil remover patent
Packaged drop tester patent
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