In Wenzhou, known as the “Shoemaking Capital of China,” Feilong Polyurethane Equipment has witnessed—and driven—the transformation of China’s footwear manufacturing from import dependency to technological self-reliance.
Step into a shoe manufacturing workshop powered by Feilong equipment, and the first thing you’ll notice is a high-speed sole molding machine running at 8,800 rpm. Its advanced weight-setting control system eliminates the cumbersome parameter adjustments required by traditional equipment when changing speeds. Combined with a metering accuracy of ±0.5%, it boosts product qualification rates to over 99%.
This leap in efficiency is built on three core technological breakthroughs:
- Oil-Heated Raw Material Pipeline System Using forced circulation of heat-transfer oil, it maintains raw material temperature with ±2°C precision—solving the instability issues caused by temperature fluctuations in traditional electric heating systems.
- Wear-Free Rotary Valve Mixing Head Designed for long service life, the rotary valve head lasts more than three times longer than traditional needle valve designs.
- Fully Automatic Cleaning System Each cleaning cycle uses as little as 30 g of solvent—only one-third of industry averages—significantly reducing operating costs and environmental impact.
Polyurethane is known for its unique elasticity—between rubber and plastic—and Feilong’s technology maximizes this material advantage. Its dual-component precision metering system produces gradient foam shoe soles with densities from 0.3 to 0.8 g/cm³. The outsole adopts a high-density microcellular structure with over 6 times the abrasion resistance of rubber soles, while the midsole uses a low-density cushioning layer with rebound rates above 65%, achieving optimal comfort.
Feilong’s innovation is powered by a four-in-one R&D system consisting of a technology R&D department, performance testing center, academician workstation led by Academician Li Junxian of the Chinese Academy of Engineering, and a cooperative program with the Chinese Academy of Sciences’ Shanghai Technology Transfer Center. This “enterprise + academia + research” model accelerates industrialization of laboratory achievements.
Within China’s footwear manufacturing cluster, Feilong acts as a catalyst for technological upgrading. Shoe manufacturers using Feilong PU equipment report 15%–20% lower production costs per unit compared to the industry average. This cost advantage is helping Chinese shoe brands enhance their competitiveness in the global market.
More importantly, Feilong is reshaping industry standards. As the lead drafting unit of the “Polyurethane Elastomer Casting Machine” and “Polyurethane Low-Pressure Foaming Machine” Zhejiang manufacturing standards, Feilong promotes alignment between Chinese manufacturing standards and global benchmarks. Certified by ISO9001 and EU CE, Feilong’s equipment is exported to more than 15 countries and regions, saving hundreds of millions of dollars in foreign exchange annually.
By 2025, Feilong’s digital transformation has already taken shape. Its latest industrial IoT platform collects real-time equipment data and uses AI algorithms to predict maintenance needs—minimizing downtime and enhancing operational efficiency.
In green manufacturing, Feilong leads the industry with solvent-free polyurethane molding technology. Through optimized raw material formulations and advanced processing, VOC emissions are reduced by over 95%, and discarded PU soles can be recycled with 80% of their mechanical strength retained—creating a circular production model with real economic and environmental value.
From its first manual PU casting machine to fully intelligent production lines, Feilong has built a 25-year legacy of innovation. It has not only changed how shoe soles are made—it has redefined the technological power of Made in China. Behind every comfortable step we take in a pair of PU-soled shoes lies a story of industrial ambition—from follower to global leader.
