HT product is produced by bidirectional dry pressing technology,mainly used for coping and coping bridge.The most advantage of this product is with lower scale factor, product shrinks more less-one block can be milled most up to 40pcs crowns,greatly lowering dental labs cost. Bridge flexrual strength is about 1300mpa:coping thickness can be lowest 0.4mm;full contour thickness can be lowest 0.6mm;for posterior,the abutment(nature tooth) with good conditions,Continuous delection position can be most 3 crowns and the abutment(nature tooth) with good condition can be made cantilever bridge with 1 crown.