Latest update : 18/06/2018 17:59:21

English available

  • Failed to register as Favorite Page
  • Failed to cancel as Favorite Page
  • This page is already registered as a Favorite Page
  • TDC Corporation

    Our ultra high precision mirror polish machining achieves surface roughness of Ra 1nm or less on any material or shape. 
    Main Image
    Our ultra precise mirror polishing technology plays a key role in manufacturing of a variety of precision components.  We have a track record in 12 countries across the globe, and have provided many customers with this essential technology for research and development to enhance the accuracy of semiconductor manufacturing devices and precision equipment.

    Sales Pitch1 : Precision manufacturing through TDC's unique polishing technology

    Public information


    TDC can realize very precision quality in any dimension, such as roughness, flatness, parallelism, size tolerance and so on.


    Precision parts for semiconductor processing equipment
    Polishing mold for plastic injection process, nano imprinting process.
    Polished test pieces for research labs.

    Product and technology information

    • Ultra precision machining (ultra high precision of the 100 nano level)

      Ultra precision machining (ultra high precision of the 100 nano level)

      [Product description] Our core technology lies in ultra precise mirror surface polishing technology. From highly precise mirror surfaces you can obtain flat surfaces. In a 100 φ area, the flatness will be 30 nano. After one surface is successfully produced with this flatness, then the other side and pallallelism will be secured. This will eliminate variance in measurement, and measurement, dimensional, thickness, or step tolerances can be assured within +/-100 nano (0.1 micron) . Tilted surfaces can also make up angles. Like this, our processing technologies are based on lapping, in which we achieve ultra high precision at the 100 nano level by shaving off higher points first and meticulously. We can apply this to curved, cylindrical, and spherical surfaces, as well as foils and inside of pipes. The level of precision is still improving, and it is now as precise as 0.1 micron (100 nanometers). Our technologies have been used by over 3000 customers across different industries including the auto, semiconductor, printing, optical, MEMS, aerospace, medical, electronic parts, and nano technology industries, as well as research institutes and universities. [Market share/Ranking] These are our unique technologies with processing precision at a level that cannot be replicated by others. [Major facilities and equipment] 80 single-sided lapping machines, 15 dual-sided lapping machines, Mitsutoyo LEGEX 9106 three-dimensional measuring machine, Taylor Hobson Talysurf CCI 3000 shape and surface roughness measuring machine, Taylor Hobson Talyrond 365 circularity measurement machine, among others

    • Ultra precise mirror finish roll

      Ultra precise mirror finish roll

      [Product description] Roller outer surface mirror polishing technology. Our ultra precise polishing technologies achieve nano level surface roughness while sustaining measurement precision and a perfect circle. Do you happen to have problematic scratches on undercoat before forming fine patterns for transfer rolls? For example, with regards to mirror polishing on the outer side of roll shafts, we can achieve surface roughness of Ra 1.5nm~, a higher level of mirror finishing property! We handle one roll to mass production for quantity, and up to 3 meters in size. Our past record: φ500 – 3000mm [Materials] Stainless steel, titanium, aluminum, glass, silicon and other coated surfaces with nickel, chrome, hard chrome plating, and other materials can be handled. Please consult us for detail.

    • Ultra precise mirror surface polishing

      Ultra precise mirror surface polishing

      [Product description] This ultra precise mirror polishing technology is one of our core technologies: With this, we can achieve nanometer order surface roughness, high precision geometric tolerances including submicron flatness, parallelism and angle tolerances. It is compatible with a variety of materials including metals, ceramics, crystalline materials and resins. We accept orders from single piece to mass production. [Materials that can be handled] Metals: Steel, hard metals, stainless steel, copper, titanium, aluminum, tungsten, molybdenum, nickel, tantalum, and others Ceramics: Alumina, zirconia, sapphire, silicon, silicon carbide, silicon nitride (coated surfaces with thermal spraying can be polished as well) Crystalline materials: Glass materials, silicon, SiC, sapphire, GaN, and others Resins: Engineering plastics, polyimide, Teflon, and others [Processing precision] surface roughness Past examples: SUS304:Ra0.6nm、Rz10nm About Ra1mm is possible for almost all materials. Flatness: Past examples: Alumina ceramics φ100*5㎜ substrates flatness 0.1μm Stainless steelφ100*5㎜substrates flatness0.5μm Stainless steelφ300*8㎜substrates flatness1μm Parallelism: Past examples: Alumina ceramics φ100*5㎜ substrates flatness0.2μm Stainless steelφ100*5㎜ substrates flatness1μm Stainless steelφ300*8㎜ substrates flatness2μm Dimensional accuracy: below ±1μm

    • Precision Foil, the ultra precise mirror polishing technology for long metal foil

      Precision Foil, the ultra precise mirror polishing technology for long metal foil

      [Product description] Metal foil can be polished to an ultra precision mirror finish of Ra 1nm order surface roughness. This technology, developed by us, is compatible with a variety of materials including copper, stainless steel and nickel. [Surface roughness] Ra1nm Rz6nm(SUS304) [Length] Can be handled up to 100 m [Materials that can be handled] SUS304 brass, copper, titanium. Others are being added. This product is used in the MEMS nano technology area, as, for example, a base material for microscopic structure and nano graphene growth. When the metal foil is formed through subsequent processes such as etching, microscopic precision parts can be produced. The provision of ultra precision mirror surface in length has made mass production possible. [Intellectual property] Utility model acquired

    • TDC spacers, shims and mirror fit spacers

      TDC spacers, shims and mirror fit spacers

      [Product description] Our company offers spacers and shims with exceptional precision for ultra precise VE assembly. These spacers and shims of submicron precision facilitate accurate assembly with no backlash. Standard spec sizes make short turnaround possible. We also take orders for custom shapes and thicknesses, as requested by the customer.

    Company Profile

    Corporate name

    TDC Corporation

    Web address


    30,000,000 (JPY)

    Number of Employees


    Established date


    Head office: Country


    Head office: Address

    24-15, Azachojyamae, Iidoi, Rifu, Miyagi, Miyagi, 981-0113


    Manufacture of general machinery


    Ryoya Akabane   President

    Main phone number


    Representative FAX number


    Keyword for searches

    polish precision lapping roughness machining

    Others (Comments)

    [Company strength]
    [Unique processing technology] Our company guarantees ultra fine precision on any material and shape, and accepts orders from single pieces to mass production. [Active marketing] For our meticulousness in order taking and responsiveness, many domestic and overseas customers have selected us as a technology development partner.  We have  established strong trust relationship with them and have been receiving orders continuously.  [Overseas expansion] By strengthening our overseas marketing, we have received orders from developed countries for machining that could not be performed elsewhere.  Our overseas customers now total 35 firms in 12 countries.  We take on domestic and international projects with a high degree of difficulty that cannot be performed by competitors.  We are further enhancing our technological capabilities by dealing with these challenging projects. 
    [Business description]
    We excel in precision machining including ultra precise mirror surface polishing. This process is compatible with a variety of materials and is able to reduce surface roughness to Ra 1nm or less on any shape from flat surfaces to curved surfaces, metal foil, and internal and external cylinder surfaces.  We are contributing to the advancement of technologies, and to research and development projects in a variety of industries, by actively marketing our services and building trust with customers, both domestic and overseas.
    [Strength of products/technologies]
    Our ultra precise mirror surface polishing technology enables high precision manufacturing of a variety of components.  We can deliver extreme accuracy in terms of surface roughness, flatness & parallelism, dimensional and angle control, and other criteria. This process is compatible with all materials — metals, ceramics, glass, semiconductors and new materials — and can handle not only flat surfaces but curved, cylindrical, and spherical surfaces as well.  The precision of this processing is such that it cannot be replicated by competitors and can be considered to be a unique technology both domestically and overseas.  It is an essential component technology for research and development, and for refining and upgrading the precision of semiconductor manufacturing devices and precision equipment.
    [Representative's message]
    Since the foundation of our predecessor, Tohoku Die Cast Co. Ltd., we have been actively engaged in manufacturing in Miyagi Prefecture for over 60 years.  Today, with our principal activities in ultra precise mirror polishing, along with a range of other precision processing derived from this technology, we are engaged in tasks relating to cutting-edge technologies in a number of fields.  Resolving difficult issues posed by customers has led to further enhancement of our own technological capabilities.  With a motto of “never say never,” we are working hard every day to establish new technologies.
    [Company structure for market development/overseas expansion]
    We conduct high precision manufacturing and quality control vigorously at our head office and factory in Miyagi Prefecture.  We have also established branch offices in Tokyo and Osaka to respond to customers and gather information.  At the head office, employees with extensive manufacturing experiences are working in business divisions, and providing collaborative sales support.  We have six bilingual staff members who can deal with customer enquiries in English by telephone or via email.  They also handle customer visits and invite customers to our site, and also participate in overseas exhibits five times a year or more.  We have established trust relationship with customers and are receiving orders from them, by undertaking detailed technical meetings with customers, both domestic and overseas.  
    [Awards and media coverage]
    [Award] “77 New Business Grants” (2001), “Miyagi Manufacturing Grand Prize” (2003), “300 of Japan's Vibrant Monozukuri (Manufacturing) SMEs” (2007), Monodzukuri Nippon Grand Award "Excellence Award” (2009), “ IT Management Award Excellence Award” (2009), Japan New Business Conference “Nippon New Business Creation Grand Award” (2011)
    [Media] Japan Economic Journal, Nikkan Kogyo Shimbun, Nikkei Monozukuri
    2012 Strategic Core Technology Advancement Program “Tohoku 1207027”.
    2013 Strategic Core Technology Advancement Program “Tohoku 1207027-1” plan amendment certification.
    [Joint research and development]
    Tohoku University (development of device for cell treatment, 2013 – present), National Institute of Advanced Industrial Science and Technology (research relating to ultra precision polishing of diamonds, 2012 – present)
    [Factory (domestic)]
    No. 1 Manufacturing Facility (precision polishing/lapping), No. 2 Manufacturing Facility (large area processing), UP Manufacturing Facility (ultra precision machining) – all in Miyagi Prefecture
    [Other sites]
    Tokyo Branch sales office (Chiyoda-ku, Tokyo), Osaka Branch sales office (Suita-shi, Osaka)
    [Transaction form]
    Prototype development orders, joint development, contract processing, product and materials sales, and the like
    [Exhibition History/Information]
    Nano Technology Fairs 2014 (Neo-Biomimetics Symposium, Semicon West 2014, and others)

    This company is recommended by a support organization

    Tohoku Head Office

    Company profile in Japanese

    Company profile in Japanese

    Similar Companies

    We could not find a match or similar companies per your request.