精品二区久久I成人高清av在线I成人精品久久I中文字幕 国产精品I久久精品视频在线看I国产日韩欧美网站

Product features:

1. Germany Knauer company imported original valve to ensure product quality;

2. Built in sensor to provide start signal for integrator and workstation;

3. The injection volume is 1ml to 25ml to meet the needs of small-scale preparation in the laboratory;

4. The price is favorable and the cost performance is very good;