国产精品爽爽va在线观看网站丨av无码不卡在线观看免费丨国产成人综合色就色综合丨92成人午夜福利一区二区丨狼群精品一卡二卡3卡四卡网站丨久热爱精品视频在线9丨少妇性l交大片毛多丨无码人妻丰满熟妇区bbbbxxxx丨美女视频黄是免费丨波多野结衣视频网丨天堂中文最新版在线中文丨www.亚洲黄色丨国产欧美日韩小视频丨69式视频丨五月婷婷中文丨日日日网站丨欧美tv丨www色天使丨中文字幕无码日韩欧毛丨国产黄色激情视频

Mr. Tian TAN joined in Unitalen in 2014 after a 7- year experience as a substantive and preliminary examiner in Patent Examination Cooperation Center (Beijing) (PECC). Mr. TAN has been working in the Department of International Chemistry Department till now and focuses on import patent applications. With year’s practice, Mr. TAN handled many cases of new applications and Office Actions in the field of Material, Semiconductors and Chemistry.