For the first time, a mainland Chinese company has defaulted on its bonds. SunTech Power Holdings has been clinging on by its teeth but after failing to repay $541mm of notes due on March 15th - and following four consecutive quarters of losses through the first quarter of 2012 and since then having failed to report quarterly earnings - owed to Chinese domestic lenders, the firm is restructuring. As Bloomberg reports, Chinese solar companies are struggling after taking on debt to expand supply, leading to a glut that forced down prices and squeezed profits - and most notably were unable to renegotiate its liabilities and obtain “additional flexibility” from creditors. This is highly unusual and perhaps is the beginning of a trend for Chinese firms. We already know the little discussed but gargantuan size of China's corporate bond market (which dwarves the US relative to GDP) as the mis-allocated credit tsunami of the last few years begins to hit its lending limit - just as Chinese corporate leverage is surging. If Suntech, the world’s largest solar-panel maker as recently as 2011, could not renegotiate its loans, we humbly suggest there are more problem firms out there about to find their friendly local banker a little less enthusiastic - just as Marc Faber warned recently.