Wanli" brand surface additive (interface additive) of Mosaic and wall brick is the leveling material of exterior wall surface widely used in architecture and decoration engineering. With the use of advanced Germany technique, this product solves the knobbing, scaling off, cracking and leaking problems between the surfaces of mosaic, brick and cement, and patches up the defects of bad resistance to alkali, extension, heat modification, and bad adhesion. "Wanli" brand products are easy for construction. It can reduce workload, improve engineering quality, shorten engineering period, and reduce cost. Therefore it is the best base material of exterior wall paint.