Company history


Company handover to Dr.-Ing. Christian Groth

Dr.-Ing. Christian Groth takes over the company under the name mth Ultraschalltechnologie GmbH & Co. KG.


Further expansion

The addition of a warehouse creates space for the provision of raw and auxiliary materials.


Economics Minister Bernd Buchholz pays a visit

As part of a tour, Economics Minister Bernd Buchholz visits mth and finds out about the current challenges and opportunities in mechanical engineering.


Market launch of the USH 40E Air

Market launch of the manual welding gun with integrated air cooling; production expansion with in-house model making for article fixtures.


Online shop

The new homepage with sonotrode and ultrasound shop goes online. Ecoline L and Multi-Edition product ranges are overhauled and equipped with the latest safety technology.


100 welding points in one machine

Complex ultrasonic welding systems with more than 100 spot welds are supplied.


Record number of sonotrodes

Over 1,000 sonotrodes are produced for the first time.


Servo drive for the USA

The first special machine with double head and servo drive is exported to the USA.


Ecoline Multi-Edition servo drive

New development of a servomotorised feed unit; the technology is immediately incorporated into the Ecoline Multi-Edition premium ultrasonic press.


Hot gas welding

mth includes hot gas welding in its service catalogue; the first special systems are equipped with the process.


New generator series

New high-end 800GA welding gun on the market – new generator series in the starting blocks.


Relocation of the office

Move into the new office building.


Metal welding process

Further development of ultrasonic components for metal welding; development of a new welding gun; planning of a production facility expansion in the course of company expansion.


Standard feed units

A newly developed feed unit for ultrasonic applications rounds off the product range and is successfully integrated into customised systems; the first hot plate welding system is manufactured.


The Ecoline family grows

The Ecoline Multi Edition is completely redesigned and equipped with new trend-setting features; the “small Ecoline 40L” is developed for smaller tasks – a price breaker.


Expansion of the sales area

Regional agencies are founded for the purpose of expansion.


Update of the Ecoline

After great market success, the Ecoline machine series receives a fundamental overhaul to meet the increased demands.


Relocation and expansion

Relocation to the new production hall with direct access to the A7 motorway; the first machines are exported abroad.


Expansion of the premises

Planning of a new building for mechanical engineering production.


Relocation to Henstedt-Ulzburg

Relocation of the company to Henstedt-Ulzburg, foundation of the Herrde group of companies; the machining technology and assembly of special systems are spatially separated.


Market launch of USK transducers

A special year: Market launch of the new generation of transducers/converters with increased power.



The first series of the Ecoline ultrasonic welding system is produced.


HEQ2000 control system

After 2 years of development, the HEQ2000 welding monitoring and control system is launched on the market; introduction at the Hanover Trade Fair.


The first 19″ ultrasonic generator

The first 19″ ultrasonic generator with 40kHz and 300 and 600 watts is developed by mth, it is compatible with the Herfurth systems.

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