Meyer Burger Technology AG (<a href="https://www.six-group.com/en/market-data/shares/share-explorer/share-details.CH1357065999CHF4.html#/" target="_blank">SWX:MBTN</a>) has suffered another setback as its largest client, renewables developer-operator D. E. Shaw Renewable Investments (DESRI), opted to terminate its master supply agreement with the ailing Swiss solar products manufacturer.