Modelo 303 del IVA: qué es y cómo se rellena

m303I completed this course in 2016 and achieved a grade 2 pass. It's a very tough course, in my opinion. You should have completed M208 (or its equivalent) recently prior to starting M303 inBÖHLER M303 EXTRA is a corrosion-resistant, martensitic chromium steel with very good toughness, corrosion resistance, good wear resistance and improved machinability