Oct 14, 2021

Factory-backed reading pen warranty terms, RMA workflow, defect thresholds, and replacement SLAs for distributors, schools, and OEM buyers across 11 models.

Mar 10, 2025

How to audit an ABS/PC resin supplier for reading pen enclosures: melt flow 18 g/10 min, Izod 22 kJ/m², RoHS and REACH compliance, and 1.5 m drop survival.