B3.9, B4.5, and B5.9 Industria [...] Section i - Introduction Page i-a Section i - Introduction Section Contents Page Acronyms and Abbreviations .....................................................................................................................................i-7 General Information.....................................................................................................................................................i-7 General Safety Instructions ........................................................................................................................................i-3 Important Safety Notice...............................................................................................................................................i-3 Illustrations ...................................................................................................................................................................i-2 General Information.....................................................................................................................................................i-2 Symbols ........................................................................................................................................................................i-1 General Information.....................................................................................................................................................i-1