It is a high-tech en♦₽terprise that integrates ✘÷α↕the research and development,
production, sales, and service of ≠✔δstandard substances/samples.
It is a high-tech ente×β₹rprise that integrates the res☆÷↑ earch and development,produ✘®↔ction, sales, and service®♥☆ of standard substances/s₹↔♥amples.