The binder for investment powder (1)has a strong affinity for investment, (2) easy to mix and vacuumize. Features:1 The binder is colorless, transparent, nonpoisonous and can be used safely.2 Has a strong affinity for investment, easy to mix and vacuumize.3 Under the effects of binder, the mould has higher strength after burout under high temperature4 Easier divesting and deflasking.