氟化钙晶体光学盘, Calcium fluoride crystal optic disc

氯化银晶体光学片, Silver chloride crystal optic disc

氟化钙晶体光学长方体, Calcium fluoride crystal optic rectangle

光学矩形氯化钠晶体, Sodium chloride crystal optic rectangle

一次性红外光谱片, Disposable IR cards

大容量管, Large Sample Tubes

美国标准筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve

Al-23管(两端开口);外径 (mm), Al-23 Tube (both ends open);OD (mm)

Al-23绝缘管 两端开口(薄壁);外径 (mm), Al-23 Insulating Tube