Blog

Guangdian Technology provides an in-depth guide to achieving high-precision mirror finish (SPI A-1/A-2) essential for automotive car light molds. This technical analysis explores the relationship between sandpaper grit selection and micro-level Surface Roughness (Ra/Sa) standards. We detail the strict process control measures required to manage sub-micron accuracy, eliminate common defects like the Orange Peel Effect, and ensure full compliance with international optical mold specifications. Discover how our rigorous QC and specialized polishing methods deliver the flawless surface quality critical for safety and aesthetic performance in high-value automotive lighting projects.

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Plastic injection molding is more than melting and shaping plastic—it is a precise, engineered process that determines quality, consistency, and cycle time. This guide walks through every stage of the injection molding process, from mold design and manufacturing to material preparation, injection, packing, cooling, and final inspection. Learn how each step influences part accuracy and performance, why proper engineering prevents defects, and how Guangdian Technology builds high-precision molds for automotive lighting and interior/exterior trim components. Discover what makes an efficient, stable, and profitable molding process. Read More

Meta Description: Discover how small mold shops in China’s Huangyan District can take the first steps toward digital transformation by adopting lightweight, scalable solutions that improve quality, coordination, and competitiveness.IntroductionHuangyan, a district in Taizhou, China, has earned globa Read More