It is a high-tech enterprise that σσ≤ integrates the research and develoφ £$pment,
production, sales, and service of s®↑$tandard substances/samples.
It is a high-tech enterprise that int•≤§egrates the research and d≥✔evelopment,productionε→'$, sales, and serviceλ∑ of standard substan₹δ↔&ces/samples.