The value center of the nylon industry chain is shifting from chips to downstream spinning. Hengyi Petrochemical's latest announcement makes this trend concrete: two subsidiaries will jointly build a 400,000-ton PA6 melt direct spinning project with a total investment of 4.87 billion yuan and a construction period of 18 months. This scale is uncommon, and more importantly, the technology path—melt direct spinning replacing traditional chip spinning—is rewriting the cost structure of nylon filament.
Background
The project will be undertaken by Guangxi Hengyi New Materials and Hangzhou Yizhijin New Materials, located in the Guangxi New Materials Industrial Park and the Yizhijin New Materials Industrial Park respectively. Funding will come from both internal capital and external financing, reflecting the project's capital intensity. Hengyi already operates a 600,000-ton PA6 chip plant in Guangxi, running at full capacity in 2026. The new 400,000-ton direct spinning capacity extends its upstream chip advantage downstream, filling a critical gap in the integrated chain.
Melt direct spinning's core competitiveness lies in eliminating intermediate steps such as chip packaging, warehousing, and transport. According to company disclosures, compared to batch chip spinning, this process reduces water consumption by about 80% and electricity by 30%. For chemical fiber plants, water and electricity are the two largest variable costs, so such reductions could lead to a thousand-yuan gap in per-ton processing costs. Moreover, eliminating intermediate steps shortens production cycles, improving conversion efficiency and attracting customers who value rapid order response.
Industry Impact
This investment signals more than capacity expansion—it marks a shift in the competitive dimension of the nylon industry. Over the past five years, PA6 chip capacity expanded rapidly, with leading firms relying on scale to lower costs, but profit margins in chip production have compressed significantly. Extending downstream means companies no longer just sell intermediate products but directly serve fabric, apparel, and industrial filament markets, capturing higher added value. For buyers, integrated companies offer greater supply stability and smoother price transmission, but may also squeeze independent spinning mills.
Geographically, the Guangxi base's chip capacity synergizes with the new direct spinning project, while the Hangzhou base is close to the Yangtze River Delta consumer market. This dual "raw material + market" layout reduces logistics costs and enables rapid customer response. Hengyi's technical route may have a demonstration effect—if the energy-saving and emission-reduction data are validated, other chemical fiber leaders may follow, accelerating the elimination of outdated chip spinning capacity and further consolidating the industry.
For downstream fabric and apparel companies, the release of PA6 melt direct spinning capacity means more abundant nylon filament supply, potentially intensifying price competition, but product quality and consistency will become new differentiators. Foreign trade enterprises should monitor technical barriers—the carbon footprint advantage of low-carbon processes may translate into actual order advantages under green procurement rules in markets like the EU.