It is a high-tech enterpris₹≥☆e that integrates the σ≈$↔research and development,
production, sales, and service of sδ₩★tandard substances/samples.
It is a high-tech enterprδ↓®♦ise that integrates the research §and development,produc↕§→✘tion, sales, and service of standard ∑ substances/samples.