As the "Capital of Stationery in China," Ningbo's folder industry has developed over decades, evolving from traditional PP binders to smart electronic folders. Driven by the dual forces of "precision craftsmanship + innovative design," Ningbo manufacturing continues to lead the global trends in folder industry development.

In this fertile land of manufacturing, hundreds of millions of folder products are shipped worldwide every year. Yet, the industry still faces the constraints of traditional processes—fluctuations in the yield of glue bonding, energy consumption challenges in hot-melt techniques, and assembly difficulties for complex structures. These pain points are eroding profit margins and market competitiveness.

With its efficiency, eco-friendliness, and stability, LINGKE's ultrasonic plastic welding technology is becoming the preferred solution for upgrading Ningbo's folder industry.