New design of mixing blade: Press 6 new kinds complicated curved surface blades through 6 sets large moulds. Make sure the spiral curve into Archimedean curve and logarithmic function curve. Weld the blades together according to curve chart.
Three-dimensional stirring function:
Press complex shape blades and weld them with helical line to realize three-dimensional stirring, thus to ensure that the concrete is even, unsegragating, and no change of slump.
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