R&D

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Utility model 20-0819053 Utility model 20-0328274 Patent 10-1131141 Patent 10-1217592 Patent 10-1436039
Patent 10-1463238 Patent 10-1418493 Patent 10-1570872 Patent 10-1549225 Patent 10-1542569
Patent 10-1760504 Patent 10-1935523 Patent 10-1942050 Design 30-0801803 Design 30-0801804
Design 30-0801805 Design 30-0801805-01