6Pcs Retractable Gel Ink Pen Set Smooth Writing 0.5Mm Fine Point Stainproof Quick-Drying Ink Gel Pens Portable St Pen Gift Items

Gel Pen'S Ink Feature : Normal Gel Pen'S Ink Type : Gel-Ink Material : Plastic Erasable Or Not : No Writing Point : 0.5Mm Use : Office School Pen Origin : China Type : Gel Pen

We always take a rigorous full chain quality control system as the core. Before each product is delivered to the user, it undergoes multi-dimensional and full process rigorous testing and layer by layer verification to ensure that the performance and quality of the entire process meet the dual standards. Starting from the source control, all raw materials must pass inspection, and core indicators such as appearance accuracy, electrical performance, environmental compliance, and material strength must be verified item by item After the finished product is taken offline, it will enter the stage of comprehensive performance testing and reliability verification. We simulate various extreme usage scenarios, complete functional accuracy calibration, rated load operation, high and low temperature cycling, humidity tolerance, vibration impact, comprehensively verify the stability and durability of the product, and ensure that all indicators meet the standards Final re inspection, completing a comprehensive verification of appearance, function, and packaging. All test items that meet the standards and release criteria for products, we fulfill our quality commitment to our customers with every rigorous test and every rigorous verification, delivering stable, reliable, reassuring, and durable high-quality products