2013's giant solar stock rally continues (TAN +3.9%) as the EU faces a backlash over Chinese tariff proposals, and Canadian Solar (CSIQ +15.2%) soundly beats Q1 estimates with the help of a 470 bps Q/Q increase in gross margin to 9.7%. Though CSIQ's opex would only have fallen 3% Y/Y if not for the reversal of a $30M arbitration award, it still fell 17% Q/Q (exc. one-time events) thanks to 25% Q/Q drop in selling expenses. Also: CSIQ is guiding for module shipments to rise to 380MW-410MW in Q2 from Q1's 340MW, and (like JA Solar) is seeing surging Japanese shipments - they rose 76% Q/Q in Q1, and made up 25% of total shipments. TSL +8.4%. JKS +4.6%. YGE +6.9%. LDK +4.8%. DQ +7%. SCTY +2.5%.