Finally got them sorted. Only one of each voltage to check they are what I wanted. Same size and operate the same as a most popular type, but without the sticker and price tag. https://www.tradediscountshop.co.uk/?s=tds+welder
What I get normally is, its unbranded and cheap so must be rubbish. If I were to put a branded sticker on it and put it in a plastic coloured box, you won't know the difference. One out the front door and one out the other door, same building but not branded. Even the branded lvt manufacturers do it but nobody says anything.
I know 2 fitters who got their welders from China and look near the same as liester and the only difference they said was the heat dial needs turning up higher than they usually would with their old liesters but apart from that they do exactly what they are supposed to. I noticed they were considerably lighter in the hand aswell. Loads cheaper