First, the concept of magnetic beads
Magnetic beads are particles with a certain magnetic and special surface structure composed of magnetic particles and various active functional group-containing materials. The study of magnetic beads began in the 1970s. It has been active since the 1980s. The surface of the magnetic beads can be modified by a variety of reactive functional groups such as carboxyl groups, aldehyde groups and amino groups by copolymerization and surface modification. Etc., a variety of biologically active substances such as enzymes, cells, antibodies, proteins, etc. can be covalently bound.
Greenhouse Film Electric Roll Up
The Greenhouse Film Manual Roll Up Unit can roll up a length of 60-80 meter, running stably with fine out side looking and long time of usage. The inside drive gears are made of high quality steel with fine workmanship, and what is more, there is lubricating bearing assembled on the out put and input shaft. At the meantime, there is also a group of reverse gear added to it. All these make the unit to be light and easy for
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