EAST Perth-based Hydrotech International Ltd has secured a sign-off on work completed at London’s Walthamstow Central train station for the UK’s Metronet Alliance. Listed on the Australian Securities Exchange with a market capitalisation of about $11 million, Hydrotech, which designs technology that prevents water seepage into subterranean concrete and masonry structures, had used its Multi Pulse sequencing system on the station. The sequencing system produces a series of low voltage electrical charges passed through electrodes in the form of probes or wires placed within portions of the ceilings, walls and floors that are wet. This ionises the water molecules and causes them to be evacuated from the structure. Hydrotech was established to acquire Hong Kong-based MPS developer Universal Solutions Ltd, which it did earlier this year, before raising $8 million for its float on the ASX. The company, which markets itself to buyers in the UK and southern China, is chaired by former British consul general in Hong Kong, Sir James Hodge, while USL founder Ian Dallas serves as managing director. Joining them on the board are non-executive directors David Ledger, Stephen Penrose and Lee Boyd, who also serves as company secretary.