2025 Diamond Tools Analysis Report

The diamond processing industry involves growing graphite or diamond powder into single or polycrystalline diamond through high-pressure, high-temperature deposition (HPHT) or chemical vapor deposition (CVD). The resulting diamonds are then processed through ultra-precision processes such as cutting, grinding, polishing, and plating to create products such as cutting tools, abrasive grains, heat sinks, and chip substrates. With the highest hardness, highest thermal conductivity, and ultra-wide bandgap among known materials, diamond products have become irreplaceable "industrial teeth" and the "ultimate thermal management material" in precision machining, semiconductor heat dissipation, high-end consumer electronics, aerospace, and other fields. As a core pillar of the superhard materials industry, diamond processing not only ensures the supply of basic tools but also leads to cutting-edge breakthroughs in next-generation chip thermal management and quantum device substrates. As the global manufacturing industry shifts towards high-end, digital, and green manufacturing, China, leveraging its Henan industrial cluster and its proprietary equipment development, has become the world's largest producer of synthetic diamonds. The industry's total output value is expected to exceed 17 billion yuan in 2024, accounting for over 95% of global production capacity, and is undergoing a comprehensive transition toward high-end, green, intelligent, and international development.

 

01 Analysis of the Current Development Status of the Diamond Processing Industry
[Demand Side]

New Energy and Third-Generation Semiconductors Reshape the Market. Photovoltaic Diamond Wire: Accounting for 50% of Industry Use. Topcon/HJT Silicon Wafer Thinning Pushes Wire Diameter from 38 to 28 μm, with 25% Increase in Wire Use per GW. New Energy Vehicles: 800 V Platforms, LiDAR, and On-Board Chargers Drive Diamond Heat Sinks, with Global Market Size Exceeding $400 Million in 2025, CAGR >13%. Power Devices: GaN/SiC Heat Flux Density >500 W/cm², CVD Diamond Becomes the Only Alternative Heat Sink. Huawei and Infineon Have Already Verified in Small Batch. Macro Background: Total Demand for Synthetic Diamond in 2024 is Projected to Increase by 11.6% Year-Over-Year. High-End Micro-Powders and Nano-Abrasives Face Structural Shortages.

 

[Supply Side]

China's production capacity is dominated by one province, but high-end products remain a bottleneck. Henan's "one core and three regions" (Zhengzhou, Shangqiu, Nanyang, and Xuchang) account for 80% of national production. Equipment: >12,000 HPHT six-sided top presses, with an annual production capacity of 12 billion carats. Shortcomings: 90% of semiconductor-grade CVD equipment is imported, and the domestic production rate for ≥4-inch single crystal heat sinks is <20%. Laser/electronic-grade micropowders are targeted by Sumitomo and Diamond Foundry. Regional division of labor: East China for photovoltaic wire saws, South China for consumer electronics heat sinks, and Central China for primary wafer manufacturing. Long logistics radius and homogeneous competition have driven gross margins for mid- and low-end micropowders down to 15%, accelerating industry reshuffle.

 

[Technology Side]

A dual-track approach of "HPHT to maintain scale, CVD to advance high-end products" is in place. HPHT: Fifth-generation φ850 cylinder press, single chamber, 60 carats, power consumption 3500 → 2200°C for 10,000 carats. CVD: Domestic 2-inch MPCVD, temperature differential ±0.5°C, deposition rate >10 μm/h, mass production of heat dissipation-grade single crystals with thermal conductivity ≥1800 W/(m·K). Frontiers: Nanotwins + doped diamond films with laboratory thermal conductivity >2200 W/(m·K), laying the foundation for heat sinks for chips below 3 nm. Green manufacturing: Henan Zhecheng and Fangcheng parks have implemented a closed-loop "photovoltaic + energy storage" system, with HPHT unit energy consumption reduced by 40%, and carbon emission intensity exceeding the EU CBAM red line by 30%, enabling early purchase of "carbon tickets" for exports.

 

02 Analysis of the Competitive Landscape in the Diamond Processing Industry

 

A "two superpowers, multiple strong players, and specialized, sophisticated, and innovative" landscape is taking shape. Zhongnan Diamond (affiliated with Zhongbing Group) and Huanghe Cyclone, two leading companies, collectively control 45% of the global industrial raw crystals and 55% of wire saw powders. They achieve vertical integration through proprietary presses, graphite cores, and in-house wire saw factories. Power Diamond, Yu Diamond, and Huifeng Diamond, leveraging the "second curve" of CVD-grown diamonds, have listed on the Science and Technology Innovation Board (STAR ​​Market). By 2024, gem-grade single crystal revenue will account for over 40%, with gross profit margins 15 percentage points higher than industrial-grade products. "Hidden champions" are emerging in niche markets: Hehe Semiconductor (CVD heat sinks), Bozhi Gold Diamond (laser windows), and World (ultra-precision turning tools). These companies have leveraged technological barriers to penetrate the semiconductor, laser, and consumer electronics supply chains, maintaining single-product gross profit margins exceeding 50%.

International giants are clinging to the high-end market through patents and brand recognition. Japan's Sumitomo, the UK's Element Six, and the US's Diamond Foundry monopolize 80% of the market for electronic-grade single crystals larger than 4 inches, securing GaN-on-Diamond patents through a "substrate + epitaxial" bundled sales model. South Korea's Iljin and Fujimi control 58% of the global nano-polishing slurry market, leveraging patents for particle size distribution control to prevent domestic substitution. Chinese companies are also expanding overseas: Power Diamond acquired an Italian sawing brand, and Zhongnan Diamond established a heat sink R&D center in Germany. These companies are entering the overseas semiconductor supply chain through a "European technology + Chinese cost" model. Their average export price is expected to increase by 18% year-on-year in 2025, initially breaking the "low-end, low-price" ceiling.

 

03 Analysis of Future Development Trends in the Diamond Processing Industry

High-end development:

Large size, high purity, and functionalization are all pursued simultaneously. From 2025 to 2030, CVD single crystals will rapidly expand from 2 inches to 4-6 inches, with crystal defect densities <5×10¹³cm⁻³ and thermal conductivity ≥2000W/(m·K), and costs will decrease by 15% annually to meet the 3D packaging needs of high-power GaN and SiC devices. Quantum-grade doped diamond (nitrogen-vacancy color centers) will be used in quantum gyroscopes and magnetic brain imaging. Single crystal sizes will exceed 10mm, with spin coherence times >2ms, providing a solid-state chip-level platform for quantum computing. Nanotwinning and gradient alloying technologies will increase tool hardness by 20% and triple the tool life in TiAl alloy cutting, securing a leading position in aircraft engine blade processing.

Green development:

Low carbonization throughout the entire lifecycle. The industry will establish a closed loop of "green synthesis-clean processing-recycling": HPHT synthesis will utilize 100% green electricity, and the CVD reaction source gas will be upgraded from methane/hydrogen to a circulating cracking system, increasing carbon source utilization by 35%. The photovoltaic coverage rate on the roofs of diamond wire saw plants will reach ≥80%, and energy storage will reduce peak load and valley load, further reducing electricity consumption per ton of product by 12%. Waste saw wire and heat sinks will be electrolytically stripped and then melted at high temperatures to reuse diamond particles and copper substrates, reducing recycling costs by 40% compared to the original ore route. By 2028, the proportion of recycled diamond is expected to reach 30%, significantly reducing dependence on natural resources.

 

Intelligent:

Digital twins and AI will empower ultra-precision machining. Starting in 2025, leading companies will fully implement online 3D topography inspection and AI closed-loop control across slicing, grinding, and polishing processes, achieving surface accuracy RMS ≤ 30nm and an 8% increase in yield. Digital twin factories will map temperature, pressure, and plasma density in real time, enabling predictive maintenance to reduce unplanned downtime by 20%. Blockchain traceability will generate a "carbon fingerprint" for each heat sink, meeting European customers' Scope 3 carbon emissions disclosure requirements and enabling a shift from "selling products" to "selling data and services."

 

Internationalization:

A "triad" of standards, patents, and brands will be deployed globally. China has taken the lead in establishing the ISO standards for "Synthetic Diamond Single Crystal Heat Sinks" and "Nanodiamond Grinding Fluids", which are expected to be released in 2026 to seize global discourse power; companies will establish "local manufacturing + local service" bases in Vietnam, Mexico, and Poland to circumvent European and American tariffs and carbon border taxes; acquire CVD patent pools through overseas mergers and acquisitions, and build a "patent defense + counterclaim" system. It is expected that the proportion of mid-to-high-end export products will increase from the current 25% to 55% in 2030, truly realizing the leap from "world factory" to "global innovation center."