Step 1: each tube will be packed in a inner box, with polyfoam to surround it. Step 2: inner box will be surrounded by polyfoam again Step 3: put it into an 5 layer carton box Step 4: add tough corner strap on every edge of the carton box Step 5: surrounded the carton box with plastic film to protect it from wet and rain Step 6: add fragile caution sticker