We are an importer in Korea Now we are looking for a manufacturer for the concealed hinges in China. Especially on M/P, it should be 28mm didtance rather than 37mm. And one way hinge. In case you are dealing with this kind of goods, please contact me at any time. SONGKANG INDUSTRY INC. T.+82 32 765 0551 MP. +82 10 3150 2001 F.+82 32 765 0557 Tks Yu