Company Profile
Changsha DIALINE New Material Sci. & Tech. Co., Ltd. was founded in 2009 and was the first listed Chinese company to break the foreign monopoly on diamond wire and put it into volume production. The company listed on the ChiNext board of the Shenzhen Stock Exchange in September 2017 (ticker 300700.SZ). It employs more than 1,000 people and operates 3 wholly-owned subsidiaries, 5 controlled subsidiaries and 1 associate.
Diamond wire is the technical anchor. From it the company has extended upstream and downstream into a “4+1” portfolio serving four strategic industries — photovoltaics, consumer electronics, hydrogen and energy storage, and semiconductors and artificial intelligence — plus extended diamond-wire applications.
Milestones
- 2009 — Company founded; first in China to industrialise diamond wire.
- 2012 — Certified as a High-tech Enterprise; diamond wire project funded by the National Innovation Fund.
- 2013 — As lead drafting unit, published the standard “Superabrasive products — Electroplated diamond wire”.
- 2014 — Joint-stock reform; renamed Changsha DIALINE New Material Sci. & Tech. Co., Ltd.
- 2016 — New industrial park in Yuelu District, Changsha, came on stream.
- 2017 — Listed on ChiNext, Shenzhen Stock Exchange (300700.SZ).
- 2018 — Zhuzhou subsidiary established; provincial-level Enterprise Technology Centre certified.
- 2020 — Gengchi New Energy founded; entry into hydrogen and energy storage.
- 2021 — Daihua Technology founded; electronic specialty materials.
- 2023 — National “Little Giant” specialist enterprise (5th batch); controlling stake in Lihui New Materials for high-purity quartz sand.
- 2025 — Huizhou DIALINE established; named a National Manufacturing Single Champion Enterprise (9th batch).
“4+1” Portfolio
- Photovoltaics: tungsten-core and carbon-steel diamond wire, loop diamond wire, tungsten wire rope, and ultra-high-purity quartz sand.
- Consumer electronics: electronic specialty materials and precision processing of premium phone cover glass.
- Hydrogen and energy storage: graphite composite bipolar plates and related functional components.
- Semiconductors and AI: semiconductor cutting consumables, and precision transmission parts such as humanoid-robot tendon rope built on in-house ultra-fine tungsten wire.
- +1 Extended diamond-wire applications: precision cutting of stone, magnetic materials and sapphire.
R&D and Manufacturing
The company operates a provincial Enterprise Technology Centre and a Changsha Municipal Technology Innovation Centre; in 2025 its diamond-wire coating R&D centre was approved as an expanded-capacity enterprise R&D centre by the Hunan Xiangjiang New Area. On the company’s published figures, more than 90 patents have been filed or accepted (including subsidiaries and controlled companies), with more than 70 honorary certificates received.
Manufacturing runs on two bases: Changsha (No. 108 Huanlian Road, Changsha High-tech Development Zone) and Zhuzhou (Buildings E3 and E4, Tianyi Science and Technology City, Tianyuan District, Zhuzhou).
Quality and Compliance
Quality, environmental and occupational health and safety management system certifications, plus product certifications required by destination markets, are confirmed per market and per product. Certificate numbers and validity are available on inquiry.