It is a high-tech enterprise ≤ > that integrates the↕↔÷§ research and development,
production, sales, and ser€≈vice of standard substances/'Ω∑samples.
It is a high-tech enterprise ↕↓that integrates the res←™₽earch and development,production, sa¥§"←les, and service of standard ∑≥≠✔substances/samples.