Changsha DIALINE New Material Sci. & Tech. Co., Ltd. was founded in 2009 as the first Chinese company to break the foreign monopoly on diamond wire and industrialise it at scale. It listed on the ChiNext board of the Shenzhen Stock Exchange in September 2017 (300700.SZ) and employs more than 1,000 people across 3 wholly-owned, 5 controlled and 1 associate company.
Diamond wire is the anchor of a “4+1” portfolio serving photovoltaics, consumer electronics, hydrogen and energy storage, and semiconductors and AI: carbon-steel and tungsten-core diamond wire, loop wire, tungsten wire rope and high-purity quartz sand for PV; graphite composite bipolar plates for hydrogen; ultra-fine tungsten wire down to 0.005 mm and robot tendon rope for semiconductors and embodied AI.
Main Products
- Carbon-steel Diamond Wire — 26–550 µm, workhorse for multi-wire wafer slicing
- Tungsten-core Diamond Wire — 24–30 µm for thinner, larger wafers
- Loop Diamond Wire — squaring, cropping and semiconductor cutting
- Tungsten Wire Rope — pulling system of crystal-growing furnaces
- High-purity Quartz Sand — crucible feedstock
- Graphite Composite Bipolar Plate — fuel cell and flow battery stacks
- Ultra-fine Tungsten Wire and Robot Tendon Rope — down to 0.005 mm
The company is a National Manufacturing Single Champion Enterprise (2025, 9th batch), a National “Little Giant” specialist enterprise (2023) and a High-tech Enterprise, and was the lead drafting unit of China’s electroplated diamond wire standard.
https://en.dialine.xiangqishow.com/