Cover mold species since the invention of the few in setting no good production base, under the drain cover mold market price, creativity is not enough positive! And many years of professional development, combining technology manufacturing abroad from time to time, Hebei sewers cover mold, improve their product diversification, lower drain cover mold manufacturers, resulting in the production of various slope mold products have high qualities of atmosphere, so that customers who use them are full of praise. The size of the surface roughness of the cover mold depends mainly on the surface roughness of the mold cavity. General surface roughness of the mold cavity should be less than the surface roughness of a series of small plastic parts. From the perspective of cover mold filling flow appearance and plastic considerations, we hope its surface roughness as small as possible.