It is a high-tech enterprise t€→₹hat integrates the research and ≈±development,
production, sales, andγ↕≤Ω service of standard s₩±'ubstances/samples.
It is a high-tech enterprise that integ↕¥εεrates the research and developme×↓nt,production, sales, and se<£rvice of standard substances/samples.↓$