欧美日韩精品无码专区,成年无码av片,成品漫画免登录去广告版,亚洲精品一区国产

英國 Bentham 
英國BENTHAM公司是生產(chǎn)光電系列產(chǎn)品，其產(chǎn)品種類非常齊全，包括光譜儀、單色儀、光源、探測器等各種儀器。
Bentham Instruments offers over 30 years extensive experience in the manufacture and supply of standard instruments and custom systems for applications involving the study and measurement of light.

Our established customer base ranges from blue chip organisations to highly respected university research departments and we pride ourselves on supplying them with reliable and accurate instrumentation.