1. Materia: "Gray ferrum (HT200) adhibetur, quod habet altam uim resistentiam, corrosionem resistentiam et coefficiens expansionem thermarum humilis, apta ad sustentationem low-cost et missiones subrogandos.
2. Processus: Subsecutio technologiarum: processus fundendi arena formatus, cylindricus tolerantiam ≤0.01mm portavit, asperitas superficies Ra<1.6μm
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