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Utility Model Patent No: ZL201420819208.1
Utility Model Patent No: 201320187673.3 Design Patent No.:201130357404.3
Utility Model Patent No: 201320187672.9 Design Patent No.:201130484288.1
Utility model patent No: 201320005810.7 Design Patent No:200930172585.5
Utility Model Patent No: 201020693446.4
Utility Model Patent No: 200920138860.6