... this kind of casting are very mature, including material control, quality inspection. We provide material certificate with heat for ... -25EN-GJL-300GG-30EN-GJL-350GG-35Sand Casting Process:Die Casting Process:Process Flow Chart:Our Slogan: regarding the quality as ... casting and forging parts, engineering goods, etc.5. Quality control following 3 phases of thorough inspection, first-off inspection, during ...