A 4.87 billion yuan bet on nylon downstream: Hengyi Petrochemical is rewriting the cost curve of the PA6 industry with hard cash. According to the company's announcement, its two subsidiaries—Guangxi Hengyi New Materials and Hangzhou Yizhijin New Materials—will build a 400,000-tonne-per-year PA6 melt direct spinning project with a construction period of 18 months. This scale is rare in the industry—most polyester leaders are still circling around the chip segment, while Hengyi chooses to directly enter spinning, locking in profit points along the value chain ahead of time.
Background
The project will land in Guangxi and Hangzhou bases, fully adopting Hengyi's self-developed PA6 melt direct spinning technology. Compared with traditional batch chip spinning, the core advantage lies in eliminating intermediate steps such as chip packaging, warehousing, and transfer, achieving integrated polymerization and spinning. Public data indicates that water consumption can be reduced by about 80%, electricity consumption by 30%, and pollutant emissions significantly reduced. This is not a simple technological iteration but a fundamental reconstruction of the PA6 production paradigm—when water, electricity, labor, and logistics costs are compressed simultaneously, the unit full cost will be significantly lower than the industry average.
Notably, Hengyi's subsidiary Guangxi Hengyi New Materials currently operates a 600,000-tonne PA6 chip production line, running at full capacity in 2026. The addition of 400,000 tonnes of direct spinning capacity means the company will transform from a raw material supplier to a direct participant in downstream spinning. This vertical integration strategy has precedents in the polyester industry but remains rare in the nylon field. For Hengyi, this move is both a hedge against chip price fluctuations and a key to opening high-end application markets.
Industry Impact
From an industry perspective, this investment signals far more than a single company's expansion. The chemical fiber industry is accelerating its transformation toward high-end and green low-carbon directions, and PA6, as a high-performance fiber new material, has become a focal point for leading enterprises. Hengyi's entry will directly intensify competition in the nylon filament market—once the 400,000 tonnes of new capacity comes online, it will reshape regional supply-demand dynamics, especially in the already crowded spinning track in East China. For existing small and medium-sized chip spinning enterprises, this means greater cost pressure; if they do not upgrade their processes promptly, they may face order losses or even elimination risks.
For buyers, products from melt direct spinning typically offer better quality stability than chip spinning, and due to fewer intermediate steps, delivery cycles can be shortened. However, caution is needed: concentrated capacity release may lead to short-term price wars. Historical experience shows that whenever a leading enterprise expands aggressively, short-term price declines are almost inevitable—this is both a procurement window and a contract risk period. Foreign trade enterprises need to pay attention to carbon footprint requirements: markets such as the EU are increasingly strict in tracing carbon emissions of textiles, and low-carbon processes like Hengyi's will more easily obtain green orders, while traditional high-energy-consuming capacity may be excluded from supply chains.