NO.10-0869602
KOREA PATENT
NO. ZL200880013868
CHINA PATENT
NO.10-1557963
NO.10-0869603
NO.5021726
JAPAN PATENT
NO.10-1932170
NO.2145817
EUROPEAN PATENT
NO.9,937,976-1
US.PATENT
NP.ZL201480048683
NO.8,550,482
NP.6402108
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