stainless steel investment casting part features: a) Silica sol shelling-making process b) excellent quality and cheap stainless steel investment casting partfeatures:1) Process:a) Silica sol shelling-making processb) Lost wax processc) Complex shelling processd) Soluble glass process2) Materials:a) Stainless steel:i) 304, 316, 316L, 309, 310, 312, 347, 410, 420ii) ASTM: CA15, CA40, CF8, CF8M, ...