深夜在线观看免费高清在线影院av,最近最新中文字幕MV免费版,91香蕉视频好色先生TV下载,国产一二中文字幕91影院日韩欧美

美國皮克林(Pickering Laboratories)
美國Pickering Laboratories公司是一家設計﹑生產分析化學儀器與試劑的專業廠家。其在柱后衍生儀器﹑分析柱﹑衍生試劑﹑分析方法等方面世界領先。不但其精湛的專業技術在業內久負盛名，而且其不斷創新及良好的信譽被眾多的美國政府機構如EPA﹑ATF﹑FDA﹑AOAC和世界著名的廠商所認可。

Pickering Laboratories has been advancing the science and chemistry of post-column derivitization for 25 years by developing equipment, reagents and methodologies that raise industry standards. Scientists look to Pickering Laboratories to support and further their research and analysis of chemical compounds. We are the only company in the HPLC industry focused entirely on post-column systems, chemistries, methods and software for the analytical market.