The fine investment powder is applicable in (1)solid gold,karat gold,silver (2)brass alloy high-grade jewelry casting. Features:1 The casting mold can bear temperature of 720oC(1328oF)~750oC(1382oF), and has high thermal shock resistance. Casting mold can endure quick and direct temperature rising, while the mold cavity will not be fractured.2 Mold cavity duplicates are very clear, no any male- ...