China Yongrong Technology 30000 Tons Hexamethylene Diamine Project Successfully Start-up

of May 20, 2026, the 30000-ton/year hexanediamine production project of Yongrong Technology under China Yongrong Holding Group was completed, with a successful start-up and production of high-quality hexanediamine products. This node is not only the landing of production capacity, but also marks the success of China in the field of nylon 66 core raw materials to open up a completely bypass the new domestic process route, to break the long-term foreign technology blockade has important strategic significance.

Why hexamethylene diamine is so critical in

a long-standing "stuck neck" link

hexamethylene diamine is the core intermediate for the synthesis of nylon 66. The global mainstream production route is "butadiene & rarr; adiponitrile & rarr; hexamethylene diamine & rarr; nylon 66", and the core production technology of adiponitrile has long been closely monopolized by a few foreign-funded enterprises such as Invida (Invista), resulting in three structural problems: high technical barriers, Chinese enterprises are difficult to break through the adiponitrile patent blockade; The price of raw material butadiene fluctuates violently and the production cost remains high for a long time; single source dependence makes China's nylon 66 industry chain continue to face the risk of supply cut-off.

It is this background that makes Yongrong's process breakthrough have strategic value beyond a single capacity node.

Yongrong's Breaking Path: Bypass Adiponitrile, Raw Material Completely Self-supplied

Yongrong Holdings forward-looking use of "caprolactam direct production of hexamethylene diamine" innovative process, fundamentally out of the traditional route of the technical blockade circle. The core differences between the two routes are as follows:

, it is particularly noteworthy that Yongrong itself is a leading domestic caprolactam enterprise in China, and the raw materials are completely self-supplied, which fundamentally eliminates the dependence on external monopoly links and realizes the real integration of raw materials. The production cost per ton is significantly lower than that of butadiene method, and the cost advantage is sustainable.

of industry significance: technical verification success, supply pattern or face deep reconstruction.

At the technical level, the hexanediamine process route of caprolactam has completed the industrial verification, providing a replicable technical reference for other polyamide enterprises in China, and is expected to promote the overall acceleration of the localization process of nylon 66 raw materials.

At the cost level, if Yongrong continues to expand its scale, it will substantially suppress the existing import price of hexamethylene diamine and the pricing of foreign suppliers, and Chinese polyamide processors that rely on imports of hexamethylene diamine are expected to benefit from lower procurement costs.

the strategic level, the 30000-ton project is the first step in industrialization verification. For traders and producers upstream and downstream of the nylon 66 industry chain, two key trends need to be tracked: first, the rhythm and scale of Yongrong's subsequent capacity expansion plan; The second is whether the process route is open to the industry for authorization-once the authorization is granted, China's domestic hexamethylene diamine supply pattern may usher in a deep restructuring, and the existing import dependence pattern will be substantially changed.

recommend that relevant practitioners incorporate the subsequent expansion announcement and process authorization dynamics of Yongrong hexamethylene diamine into the medium-and long-term supply chain risk assessment framework, and lay out the response strategy in advance.