SINJIN® Started With technology
Philosophy
SINJIN Diamond, a representative hidden champion, has a reputation of racing against the light. SINJIN Diamond Industrial Corp. is a notable leader in the industry of natural diamond tools for ultra-precision machining in Korea. It started with the localization of natural diamond cutting tools – first in Korea – in 1997, producing Posalux tools used for machining precious metals in 1980s, and then tools for machining standardized contact lenses.

SINJIN succeeded in the development of natural diamond cutting tools for machining of laser reflection mirror, board of magnetic disks, polygon mirrors for laser printers and molds of lenses for optical components, and marketed them in the late 1990s.
Brand management
SINJIN started the operation of cutting and grinding systems, employing ultra-precision natural diamond for machining of shapes. The company also developed controlled waviness diamond tools that yield high-precision shape and surface roughness by precisely mirroring movement of tools on materials relatively easy to cut such as aluminum alloy and oxygen-free copper in 2000s.

SINJIN has established exclusive grinding systems of farthest developed technologies for controlled waviness diamond tools for controlling vibration causing damage to cutting edge during grinding, and grinding degree of tens of nanometer. These developments allow SINJIN to continuously develop tools and new technologies.
Future Plan
SINJIN started the operation of cutting and grinding systems, employing ultra-precision natural diamond for machining of shapes. The company also developed controlled waviness diamond tools that yield high-precision shape and surface roughness by precisely mirroring movement of tools on materials relatively easy to cut such as aluminum alloy and oxygen-free copper in 2000s.

SINJIN has established exclusive grinding systems of farthest developed technologies for controlled waviness diamond tools for controlling vibration causing damage to cutting edge during grinding, and grinding degree of tens of nanometer. These developments allow SINJIN to continuously develop tools and new technologies.

1977

Representative hidden champion in Korea owing experiences and know-how accumulated for over 40 years.

4

Growing a global business by opening branches in various locations around the world

15

Exporting products to 15 countries in the world

480

Collaborating with 480 global partners

1050

Producing various types of tools with up to 1050 models
Products

- Controlled Waviness Single-crystal diamond tools
- Single-crystal diamond milling tools (e.g., ball end-mill, square end-mill, and profiling mill)
- Single-crystal diamond insert tools for machining of abnormal shapes (compliant with ISO standards)
- Special PCD/PCBN tools (e.g., tools for machining of eyewear lenses, automobile engines, and aerospace components)
- Diamond tools for machining of freeform demanded by customers
Focused research areas

- Research of Total Tooling System based on single-crystal diamond material for ultra-precision machining
- Diamond tool design software linked with optical design program
- Technologies for manufacturing diamond end-mill tools satisfying 3-dimentional micro-machining
- Manufacture technologies for improving durability of diamond tools for astronomical and aerospace industries
- Developing single-crystal diamond, and PCD/PCBN tools for machining aerospace components
The history of SINJIN
2016
Venture business certified and registered by Korea Technology Finance Corporation
2015
Citation worn from Minster of Trade, Industry and Energy
2014
Elected class A technology Innovation Small Business (INNO-BIZ)
2013
Re-elected Export Promising Small Business by Small and Medium Business Administration
Certified and registered of ISO 9001:2008 / KS Q 9001:2009
2011
Re-elected Technology Innovation Small Business (INNO-BIZ) by Small and Medium Business Administration
Succeeded in developing special PCD & PCBN milling tools
2010
Exporting tools of single-crystal diamond insert type to countries in Europe and Southeast Asia
2008
Succeeded in the development of 100-nm controlled waviness natural diamond tools for optical applications
2005
Starting operation of natural diamond cutting systems for machining of profiles
2003
Development of systems for measurement of controlled waviness by curved shape tools
2002
Development of natural diamond tools for machining patterns of light guide plates for displays
2001
Starting operation of natural diamond cutting systems for machining of curved shapes
1999
Development of natural diamond tools for machining of injection molds of contact lenses and mobile phone cameras
1997
Launching patented natural diamond tools for machining of precious metal (DVP type)
1979
Localization of Posalux type tools for machining curved shapes first in Korea
1977
SINJIN Diamond Industrial Corp. established
SINJIN's product portfolio includes over 1,000 diamond tools. Please call us for any inquiry.+ Inquiry
SINJIN Building, 22, Yangpyeong-ro 12-gil, Yeongdeungpo-gu, Seoul, Republic of Korea / Tel : +82 2 2635 1951 / Fax : +82 2 2675 3976 / E-mail : sales@sinjindia.com / sales@sinjindia.co.kr
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