It is a high-tech ent erprise that integrates the researcδ$h and development,
production, sales, and service of st≤≈★andard substances/sa•≥mples.
It is a high-tech enterprise that inte∏×grates the research and dev&☆elopment,production,↕≠♣ sales, and service λ✘↔Ωof standard substances/samples.