It is a high-tech ent≤£erprise that integrates the researchδ£ and development,
production, sales, and se₩±$rvice of standard substances☆/samples.
It is a high-tech enterprise that inteγ¶φgrates the research and deα ¥"velopment,production, €γ€sales, and service of standβ★ard substances/samplλ↕®es.