成人无码高潮av在线观看_欧洲极品少妇_夂久亚州精华国产精华华液_在线观看亚洲AV每日更新无码_亚洲国产精品无码久久一线_亚洲精品区午夜亚洲精品区

GS-Tek 
美國“GS-Tek“，總部坐落于特拉華州，公司專注于色譜類產品，尤其是氣相色譜柱的研發、生產，應用方法開發及市場營銷，公司始終秉持穩定產品性能，豐富產品應用，完善系統解決方案的理念和目標，從未有絲毫倦怠。因專注而更專業，不斷贏取全球用戶的信任和支持。

General Separation Technologies, Inc. (GS-Tek),
formerly Abel Industries, Inc.,

is a leading GC column manufacturer located in the USA. GS-Tek is devoted to chromatographic separation
science and worldwide chromatographers. GS-Tek is located in Newark, Delaware and conducts both national
and international business from retail and distribution to OEM. GS-Tek provides quality and cost effective
chromatographic products and services like columns, supplies, and tech-support to end-user chromatographers in
all fields, solution and service providers, distributors and OEM partners.