Our glass beads for road marking are tested by an independent, CNAS-accredited laboratory against the Chinese national standard GB/T 24722-2020. The certificates are in force until 2 July 2027.
Tested and certified
| Product | Glass beads for road marking — low refractive index, Type 1 and Type 2 |
|---|---|
| Standard | GB/T 24722-2020 |
| Laboratory | CATS Testing Technology (Beijing) Co., Ltd. — CNAS L4566, CNAS IB0205, CMA 220001341969 |
| Reports | 2025J010048 · 2025C010048 · 2025J010049 · 2025C010049 |
| Issued / valid until | 3 July 2025 / 2 July 2027 |
Key results
- Roundness 91 % — the standard requires ≥ 80 %
- Magnetic particles 0 % — limit ≤ 0.1 %
- Density 2.46 g/cm³
- Lead 7 mg/kg, arsenic 4 mg/kg, antimony 9 mg/kg — limit ≤ 200 mg/kg each
Certificates
Download
Test report and factory inspection certificate (PDF, 20 pages)