The company behind NanoEFX
NanoEFX was invented and is manufactured in Japan by EiShin Co., Ltd. ECO EFX Solutions GmbH in Hamburg is the German company responsible for its international commercialisation. We help combustion engines run cleaner — reducing fuel use and emissions, without engine modifications.
| 2009 | Founded in Japan as EiShin Co., Ltd. Prototype development begins the following year with an engineering doctor from Osaka University. |
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| 2016 | Listed on the UNIDO Environmental Technology Database (STePP), under the Energy and Environment categories. |
| 2018 & 2021 | The eco-SPRAY | NanoEFX patent is registered in Japan, and subsequently in the United States. |
| 2022 | The first vessel study runs with Ishida Shipbuilding and Kyowa Industries. |
| 2023 | ECO EFX Solutions GmbH is founded in Hamburg/ Germany to develop the international market for NanoEFX [eco-SPRAY] |
| 2023 & 2024 | Independent academic work: a fuel-consumption study at the National Institute of Technology (KOSEN), Hiroshima, and a diesel study by Prof. Toshifumi Chaen at the Hiroshima National College of Maritime Technology. |
The full record, including the parts that did not lead anywhere, is on our story.
Our story
How NanoEFX began in Japan and grew into a global emission-reduction technology — our mission and the milestones along the way.
Read our story →Team
The founders and specialists behind NanoEFX, across Japan, Europe and Africa.
Meet the team →Partners & UNIDO
International recognition, the UNIDO database listing, and the ECO EFX Solutions Group of regional companies.
See partners & recognition →Governance
Leadership and advisory board, quality, compliance and product safety, ethics and whistleblowing.
See our governance →The uncomfortable parts are published too
Fuel-saving products have a credibility problem, and it is largely self-inflicted: selected best cases, percentages without a method, and no trial that ever came up weak. We decided to run the opposite way. Everything below is on this site, with the numbers.
We publish the trial with the weakest result
Across eleven telecom tower generator sites in Nigeria we measured a median of 1.7% and two sites that got worse. It has its own page, with the same detail as the favourable trials — because a product that works everywhere is not a believable product.
We name the figures we withdrew
A NOx claim we could not trace to any measurement was removed from this site in August 2026. Two results at one Japanese operator were traced to an implausible baseline and excluded — while staying visible in the table, so you can check the reasoning.
We show the limits next to the number
Our best-documented trial reports an 18.2% reduction — and, on the same page, that the vehicles also ran 10.5% lighter during the trial period. We found that in the operator's own records and published it rather than leaving it out.
The full evidence section → · all 386 individual measurements, including the 300 we cannot verify