Company History

Our present core business concentrates on electroplating, electrical insulation by electrostatic coating as well as paint and powder coating. The scope of duties ist completed by laboratory services and R&D activities.
The total turnover of our company increased from EUR 1.2 million (1992) to more than EUR 9.0 million (2015). Currently, our company employes about 100 staff members.

Construction of two new storehouse (storage space about 570 and 140m2).

Installation of the second fully automatic rack electroplating unit.

Introduction of a certified environmetal management system according to ISO 14001. The current certificate is available for download here.

Installation of a third facility for electrostatic insulating coating.

Introduction of a certified safety and health management system according to OHRIS. The current certificate is available for download here.

Installation of the first fully automatic rack electroplating unit.

Introduction of a certified quality management system according to ISO 9001. The current certificate is available for download here.

Installation of a fully automatic facility for electrostatic insulating coating. A second unit was installed 2004.

Relocation of the company headquarters. Extension of our business fields (research company and innovative technologically oriented service provider in the field of surface coatings).

Completion of the start-up phase and establishment as a GmbH (private limited company). The TZO is an aproved research company in the Free State of Saxony. The company focusses on development and projection services as well as environmental subjects (e.g. consulting and survey reports concerning exploration of polluted areas and disposal).
Foundation and accreditation of the Laboratory for Environmental Testing and Material Testing.

The TZO Leipzig GmbH i. A. was established in June 1990. The company starts with 19 employees.

Foundation of the TZO as a research and development company (surface coating and environmental engineering) within the state combine LEW Hennigsdorf.



We provide decorative and functional galvanic coatings with experience especially in electroplating aluminium substrates.
Our coating systems guarantee optimal layer qualities as well as excellent corrosion protection even for complex shaped parts. Of course, we are certified according to ISO 9001 and ISO 14001.

Fully automatic rack system for tin, silver, nickel and copper coatings 

  • substrate materials: aluminium, copper and copper alloys
  • maximum workpiece size: 2300 x 1000 mm (unit 1: Sn, Ag, Ni, Cu)
  • maximum workpiece size: 2600 x 1400 mm (unit 2: Sn, Ni)
  • realization of small series as well as mass production
  • optionally partial silver coating
  • compiling of test reports (layer thickness, adhesive strength)

Manual electroplating

  • bright chromium (subtrates: aluminium, steel, non-ferrous metal)
  • bright nickel (subtrates: aluminium, steel, non-ferrous metal)
  • bright copper (subtrates: aluminium, non-ferrous metal)
    --> maximum workpiece length: 2500 mm
  • anodic treatment and colouring
    --> maximum workpiece length: 2100 mm
  • alkaline zinc
  • passivation (blue)
  • chromating (black, olive)
    --> maximum workpiece length: 1300 mm
  • pickling (subtrates: aluminium, steel, non-ferrous metal)

Equipment for mechanical pretreatment

  • Equipment of blast cleaning, grinding, polishing and brushing (substrates: aluminium, steel, non-ferrous metals)


Insulating Electrostatic Coating

Electrostatic powder coating with epoxy resin for electrical insulation of laminated sheet packages as component part of small-power motors

The epoxy resin powder is applied on non-preheated laminated sheet packages. Using induction heating to temperatures above 200 °C the so far adhesively attached powder layer forms a fusion bonded coating. This procedure allows the formation of uniform layer thicknesses in the range of 50 to 500 µm even in critical areas like the inner space of a groove. Preliminary to the inductively induce curing process a selective powder removal in areas not to be insulated is possible by means of blowing nozzles and scrappers.


  • Coating process
    • EFB process (Electrostatic Fluidized Bed)
    • Electrostatic powder coating according to the burning-in procedure 
  • Coating equipment
    • 2 fully automatic coating facilities with shaft assembly
    • 1 automatic coating facility
    • BMI 900 lab coating system
  • Epoxy resin powder
    • Akzo Nobel Resicoat RT 6000 EL4 HH0303 (800903)


Paint / Powder Coating

Wet painting

  • Painting in all RAL colours as well as special colours (on customer request)
  • Varnishing with different gloss level (high-gloss, sik-mat, matt)
  • Painting with smooth lacquer, effect lacquer and textured varnishing
  • Top coat up to car paint quality
  • Wet painting in a low-dust spraying-drying chamber
  • Two-component water and solvent-based lacquer
  • Processing of components with the following dimensions
    • Length up to 4500 mm
    • Width up to 2500 mm
    • Height up to 2200 mm

Powder coating

  • Standard dimensions for coating of components
    L x W x H 1700 x 1700 x 1600 mm
  • Individual parts up to 2300 mm
  • Insulating coating of sheet packs for small motors with EP powder resins Production of large series and individual parts

Pre-treatment for both processes

  • Blasting for aluminium (special fused alumina), steel, stainless steel
  • Metal grinding and polishing
  • Roughening, grinding and smoothing
  • Chromate-free pre-treatment (aluminium)
  • Thin layer phosphating
  • Galvanizing (zinc plating) and passivation


Laboratory for Environmental Testing and Material Testing (LUW)

Registration no. D-PL-11034-01-0 (Deutsche Akkreditierungsstelle)

The laboratory is accredited for environmental simulation processes and other test methods in accordance with DIN EN ISO / IEC 17025.

The laboratory provides the following services:

  • Climatic testing
  • Corrosion testing
  • Mechanical testing
  • Microbiological testing (Fungi)
  • IP protection class testing
  • Testing of coatings
    and other testing methods

Further services (non accredited area):

  • Preparation of test programmes
  • Development-accompanying weakness and reliability tests
  • Type tests and acceptance tests
  • Declaration on the environmetal suitability for product documentation
  • Damage analysis

You can download the list of our services here.


Chemico-technical products

Etchants for non-ferrous metals

Hydrogen-peroxide containing sulphuric etchant for non-ferrous metals with TZO peroxide stabilizer “Type E”

  • The advantage of these etchants consists in their environmental friendliness, sincethey do not generate any harmful waste gasses and can be regenerated.
  • The decomposition of hydrogen peroxide on account of the catalytic effect of heavy  metals is prevented by means of the use of the TZO peroxide stabilizer “Type E”.
  • A considerably higher stabilizing effect and increases of the life time by a factor of  200 compared with non-stabilized etchants are achieved.

Hydrogen-peroxide containing sulphuric etchant for non-ferrous metals with TZO high-temperature peroxide stabilizer “Type EH”

  • Higher working temperatures, which the “Type E” stabilizer cannot ensure, are required for severely oxidized parts. The TZO high-temperature peroxide stabilizer “Type E” was developed for applications with a working temperature of up to 75°C.

Bright etchants for non-ferrous metals

  • Highly productive three-stage etching procedure with optimised stripping
  • Intermediate rinsing can be dispensed with since the main components are identical during all three stages of etching.
  • Grinding and polishing capacity can be saved by means of the use of the bright etchant before the application of galvanic layers.

Cupro Quench 2.2 procedure for reductive quenching of semi-finished
Cu products

  • On account of the addition of Cupro Quench 2.2 to the quenching liquid oxide layers do not form during underwater pressing.
  • This means the subsequent technological steps of etching and greasing which were required so far are no longer needed and further production expenses can be considerably reduced or avoided.
  • This results in savings in terms of working time, material, power and water as well as in an increase of the raw-material yield through the avoidance of stripping procedures.


Analytical Laboratory

The key aspects of the activities in our company-owned analytically laboratory are:

  • Process analysis of electroplating
  • Material analysis
  • Environmental analysis

To control the quality of our products (coatings) etc. the following measurement methods are available:

  • Gas chromatography (with MSD, ECD, FID)
  • Ion chromatography
  • High-performance liquid chromatography
  • ICP
  • Sum parameters (AOX, EOX)
  • Layer thickness measurement (x-ray fluorescence, magneto-inductive, eddy current method)
  • Determination of adhesive strength
  • Measuring of gloss level (paint coatings)