?B Just lay easy installation. Seismic matte performance does not change many times as well. Type doesn't leave any marks on the mounting surface. Seismic test of seismic intensity 7 class pass! For bouncing back and forth horizontally. -Adhesive gel-load capacity: 64 kg-: pieces of 4-size: 40 x 40 mm-material: ?E???^??g?G?X?g????}?[-shear, vibration-proof, soundproof and theft prevention capabilities:-thickness: 5 mm-color: blue-adhesive weakens, return to wash.