A production line capable of producing 1,000 tons of T1100-grade high-strength carbon fiber annually, another with 5,000 tons of 48K large-tow carbon fiber, and a third yielding 600 tons of M40-class high-modulus fiber—China National Building Material Group (CNBM) has simultaneously commissioned three of the world's largest carbon fiber production lines at its Lianyungang base, with a total designed capacity of 31,000 tons. These figures mark a qualitative shift for China's carbon fiber industry, moving from a follower to a competitor and, in some segments, a leader.
Event Background
On June 28, CNBM held a commissioning ceremony in Lianyungang, showcasing three globally largest carbon fiber production lines. Construction began in June 2023 on a 1,500-mu site with a planned total investment of 6 billion yuan and a blueprint for ten complete lines. The three lines now operational form a full-spectrum product matrix covering high-strength, high-modulus, and large-tow categories, targeting high-growth sectors including aerospace, wind turbine blades, new energy vehicles, deep-sea and deep-earth equipment, sporting goods, and 3C electronics.
Technically, the SYT70 (T1100-grade) high-strength fiber meets extreme demands for lightweight and high-load capacity in aerospace; the SYT45S-48K large-tow fiber offers cost-effective solutions for industrial applications; and M40-class high-modulus products serve applications requiring exceptional rigidity and precision. After one month of trial operation, all three lines have achieved target production quality, demonstrating significant progress in continuous manufacturing stability.
Industry Impact
What does this mass commissioning mean for downstream industries? First, a structural shift in supply. For years, China's carbon fiber market was characterized by a dumbbell-shaped pattern—oversupply in low-end grades and heavy reliance on imports for high-end materials. The simultaneous launch of full-spectrum lines means domestic suppliers now offer complete coverage from T700 to T1100 grades, from standard to high modulus. Buyers of high-end products no longer need to pay hefty import premiums.
For the wind power industry, the 5,000-ton 48K large-tow line directly addresses the need for low-cost carbon fiber in ever-larger blades. As blades exceed 120 meters, glass fiber approaches its performance limits, making carbon fiber the logical choice for weight reduction and stiffness. This stable supply could reduce wind-grade carbon fiber costs by 15%-20%, accelerating technology iteration in the era of grid parity.
The aerospace sector benefits even more directly. T1100-grade carbon fiber was previously available from only a handful of global suppliers, often subject to export controls. With a 1,000-ton domestic line now operational, material self-sufficiency for commercial aircraft, satellite structures, and missile casings will rise significantly, enhancing supply chain security.
Competitive Landscape Reshaping
Globally, China's carbon fiber capacity is surging. In 2023, China accounted for roughly 40% of global operational capacity, and the Lianyungang base's new lines will push that share higher. Critically, this is not just capacity expansion but a dual strategy of technology and industry leadership. CNBM explicitly outlined a path of simultaneous high-end advancement and scaling, signaling that domestic players no longer aim to be low-cost alternatives but intend to compete head-on with Toray, Hexcel, and other global leaders on performance metrics.
For the carbon fiber industry itself, full-spectrum manufacturing will force upstream sectors—precursor production, carbonization equipment, and sizing agents—to upgrade in tandem. The involvement of Zhongfu Shenying as the operator, with its advanced carbonization lines and smart warehousing, also indicates a shift from labor-intensive to digitally optimized factories.
Market Signals and Risks
However, rapid capacity expansion carries risks of temporary supply-demand imbalance. By 2024, China's nominal carbon fiber capacity had exceeded 120,000 tons, while actual demand hovered around 80,000 tons, signaling nascent structural oversupply. If downstream penetration—especially in wind power and aerospace—does not accelerate in line with capacity additions, price wars may ensue, squeezing smaller producers.
Price trends already reflect this pressure. Large-tow carbon fiber prices dropped from around 200 yuan/kg in 2023 to 150 yuan/kg, and the new 48K line could push them further to 120 yuan/kg. This benefits end users but poses survival challenges for manufacturers focused only on standard-grade products.