GENEVA, March 8 -- YHY TECHNOLOGY LIMITED (Room 402, Building 3, No.215, Yuehai Avenue, Xiegang TownDongguan, Guangdong 523000), 东莞纳辰杰机电科技有限公司 (中国广东省东莞市谢岗镇粤海大道215号3号楼402室), MA, Hing Kin William (Unit 711, 7/F, New Tech Plaza, 34 Tai Yau Street, KowloonHong Kong 999077), 马庆坚 (中国香港特别行政区香港九龙大有街34号新科技广场7楼711室) filed a patent application (P...
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