Portable Colorimeter with Aperture Φ6mm Repeatability ΔE*ab≤ 0.03 D/8 SCI
（1） Dual optical path design improves repeatability accuracy dE ab≤0.03. Related technologies are protected by Chinese invention patents and US invention patents. • Difference(ΔE ab,ΔE cmc,ΔE 94,ΔE 00).