It is a high-tech ent≠∏≥↔erprise that integrates the£™₹ research and development,
production, sales, and$¶ service of standard substances/sample≤φ↔s.
It is a high-tech en§∑terprise that integrates the β≥×$research and developmλ• ent,production, sales, and service of $standard substances/sampl∑γ÷ es.