... line can be semi-tower type, it's precise weighing than series type, cheap investment than tower type. Dry mortar is carefully proportioned ... gypsum, well-graded dry sand and selected admixtures, such as polymer powder, cellulose ether, pigment and related additives.It's produced ... h.According to the structure type, it can be classified into tower type, self-tower type and series type. It is up to the ...