Points to note in PDF printing

With the increasing maturity and improvement of the prepress digitalization process, more and more manuscripts received by the prepress production department in commercial printing are electronic files. PDF files are the most common of these electronic files, which are standard and stable

AB launches new mass spectrometer

As the leader of the mass spectrometry industry, American AB has obtained more than 700 patents in the research and production process for many years, and continues to rank first in the global mass spectrometry market sales and market share, and has the world's largest user base. It is