Pollutio gra- vissima maxime manifestatur in superficie aluminii ffoyle 0 status. Post aluminium claua annealed, probatur aqua percute modum, et non attingit gradum determinatum in aqua percute test.
Aluminium ffoyle quod requirit aqua-lavatio test maxime usus est ad excudendi, composita cum aliis materiae, etc. Ergo, the surface of the aluminum foil must be degreasing clean and reach the level specified by the water-washing test.
The main reasons for unclean degreasing: excessive oil on the surface of the aluminum box; excessive slitting tension; unreasonable annealing process.
