It is a high-tech enterprisσ±♠e that integrates the research and☆↕↔ development,
production, sales, and service of ↓α standard substances/samples.
It is a high-tech enterpφγrise that integrates the resear'λch and development,production, sales, "↓↕♣and service of standard substances/samp♣↑≠≠les.