Shanghai paka xingye chemical co. LTD.

Scanning electron microscope

Scanning electron microscope (SEM) is an electron microscope that produces images of a sample by scanning the surface with a focused electron beam.


High performance liquid chromatograph

High performance liquid chromatography is a chromatographic separation methods,


Inductively coupled plasma mass spectrometer

Icp-ms, or inductively coupled plasma mass spectrometer, is an analytical instrument that combines ICP technology with mass spectrometry.