It is a high-tech enterprise that int♦×>egrates the research and development&≥,
production, sales, and service of stan♦₹'λdard substances/samples♥$.
It is a high-tech enterpris¶"δΩe that integrates the researc♥≥∑✘h and development,produφ ction, sales, and service o✘<<f standard substances/samples.