Tri-Tech originally started as a company in the UK manufacturing a range of unobtainable parts for the micro car market. It was therefore a natural progression for the company to manufacture their own replica bubble cars. The vehicles can be purchased as complete cars or in a kit form to build yourself in around 28 working days.  The Zetta 300 is an accurate replica of the BMW Isetta but has the advantages of modern technology with a 40mm box ladder frame construction and a Honda 250cc automatic engine that sits in line over the rear swing arm assembly which is claimed to give far better ride and stability than that of the original. The body of the Zetta is fibre glass giving the vehicle an overall weight of  approx 300kg and a fuel consumption of 60 - 70 mpg.

Like the Zetta the Schmitt is powered by a Honda 250cc and is an accurate representation of the Messerschmitt. The vehicle uses the a braking system from the Mini and it had an all fibre glass integral steel chassis frame in a Monocoque construction.  The total weight of the Scmitt is 270kg giving the vehicle an overall fuel consumption of 65 - 75 mpg.  Tri-tech has also announced a new Tiger front for the Schmitt and a 3-wheeler car trailer.

The company are now believed to be out of business.