Polishing/Lapping (Lapping/Polishing/CMP)

TDC’s ultra precise lapping/polishing technology enables us to realize high precision manufacturing.

  • We deal with wide range of materials such as Metals/Ceramics/ Crystals/ Resin.t
  • We realize surface roughness of Ra1nm / Ra4nm on any kinds of shapes including curved surface and inner/outer cylinder.
  • We can achieve not only Roughness but also every required precisions such as Parallelism 100nm, Flatness 30nm, tolerance +/-100 nm, Angle +/- 3 sec, Roundness 50nm and others.
  • We are engaged in high-tech industries of various fields such as Nanotechnology / Inspection and Measurement/ Semiconductor Manufacturing equipment/ Automotive industry/ Electronics engineering / Alternative energy/ Aerospace/ MEMS


Metals Stainless Steel / Superalloy / Copper / Titanium / Aluminum / Molybdenum / Tungsten/ Nickel / Tantalum etc.
Ceramics Al2O3 / ZrO2 / SiC / Si3N4 / SiO2, Also Coating and Plating are acceptable.
Crystalline Material BK7/ Crystal/ PYREX/ Quartz / Si/ SiC /GaN/ Sapphire
Resin Engineering Plastics / PEEK/ PMMA /PEFE

Processing Achievement


Lapping with Diamond Abrasive Lapping with GC
Flatness 0.1um 2 um
Roughness(Ra) 0.001um(1 nm) Pearskin Finish
Parallelism 1um 2um
Tolerance ±0.5um ±1um

What is “Precise Mirror Polishing”?

TDC uses a “lapping machine”, in which both workpiece and surface plate turns.
As the process progresses, we change the Abrasive (slurry) to smaller grains.

  1. 1st Processing

  2. 2nd Processing

  3. 3rd Processing

We achieve the world’s highest level of roughness, parallelism, Flatness, Tolerances with our micro level Precise Mirror Polishing.

Contact us
Feel free to contact us.