A 4.87 billion yuan investment announcement has shifted the competitive focus in the nylon supply chain from capacity scale to process generation gap. Hengyi Petrochemical disclosed in mid-August plans to build a 400,000-ton annual PA6 melt direct spinning project through two subsidiaries, Guangxi Hengyi New Materials and Hangzhou Yizhijin New Materials, with an 18-month construction period and funding from internal and external sources. For buyers, this is not just an upstream expansion signal—it means the cost curve for PA6 spinning could be redrawn in the coming years.
Event Background
The project spans the Guangxi New Materials Industrial Park and the Yizhijin New Materials Industrial Park, creating a dual-base layout in the south and east. The notable point is not the capacity figure itself but the process route—full adoption of Hengyi's self-developed PA6 melt direct spinning technology. Compared with the industry-standard batch chip spinning, this process cuts water consumption by about 80% and electricity by 30%, while eliminating intermediate steps such as chip packaging, warehousing, and transport. These numbers translate into a substantial reduction in unit costs and a direct easing of carbon emission pressure.
Hengyi already operates 600,000 tons of annual PA6 chip capacity, which ran at full load throughout 2026. Once the new 400,000-ton direct spinning project comes online, the company's business will naturally extend from raw material supply to spinning processing, filling a critical gap in the nylon chain. This is not a simple capacity addition but a closed-loop integration move—upstream chips self-supplied, midstream spinning self-produced, and downstream customers directly connected, compressing intermediate profits and losses inside the company.
Industry Impact
For the chemical fiber industry, the demonstration effect of this investment outweighs the project itself. Leading companies are collectively shifting toward high-end and green development, and PA6 has become a core track for new growth curves as a high-performance fiber material. Hengyi's simultaneous push in both polyester and nylon indicates a competitive logic that moves from single-product scale to full-chain efficiency. For peers, the energy-saving metrics of melt direct spinning will force outdated chip spinning capacity to exit faster, potentially accelerating industry consolidation.
For downstream weaving and apparel companies, the most direct impact is a marginal change in the PA6 spinning supply pattern. The new 400,000-ton capacity will ease part of the high-end nylon filament shortage, but more importantly, it will affect cost transmission—if the cost advantage of direct spinning is effectively realized, the price center of PA6 filament may move down, influencing fabric pricing logic. Foreign trade companies should be wary that if capacity releases cluster, the nylon product market may face temporary oversupply after 2027, increasing price volatility.
From a regional economic perspective, the Guangxi base leverages local resource and energy advantages, while the Hangzhou base sits close to the Yangtze River Delta consumer market. This dual-base layout balances cost and response speed, offering a replicable siting paradigm for other chemical fiber companies: raw material ends shift to the central and western regions, while processing ends stay close to industrial clusters. Hengyi's move is essentially a redefinition of the geographic pattern of the nylon industry.