powertec piston and cylinders?

[tree_beard]

anyone come across aftermarket top-ends made by powertec/powertech? lots on u.k fleabay.. i'm guessing chinese by the price, anyone know better?

 

[Mad Professor]

http://www.powertectools.com/products/en/default.asp?sortname=Gasoline Chain Saw&sid=108&pid=107

http://www.powertectools.com/products/en/ProFullInfo.asp?_id=1044

If it's these guys looks like Chi-Com ripoffs of Husky/Stihl

They making bars for GB too?