description: two types for choice: plus and general types as follows different by materials quality: plus——super hard materials general——high wear materials 1.excellent performance: double cross link material:outstanding wear resistance,anticracking. multi-layers：four layers in anterior and two layers in posterior. multi-moulds: 20 moulds for anterior and 9 moulds for posterior. posterior occlusal forms: 28°, 20°designs. popular shades: base vita 16, from a1 to d4. 2.patent teeth adhesive board: environmental protection and no wax. we can also supply wax boards. 3.packing spec: 6 *1 for anterior, 8*1 for posterior and 28*1 for full set. package: 16 sets/box for anterior, 12 sets/box for posterior and 4 sets/box for full set.