... Molding system is put the mixture of self-hardening sand fill in the molding machine, generate sand mould for pouring. ... separation, Used-sand temperature adjustment, New&used sand conveying, Add resin or sodium silicate, etc, Mix sand, Making core, Molding, ... 398 technical personnel The specifications as follows:1.Resin sand is a resin binder-type configuration(core)sand.2.sand reclamation ...