保加利亚采购需求：碳钢精密铸造、精密铸造供应商、碳钢铸造制造商、定制碳钢零件、B2B精密铸造、高品质钢铸造

I'm looking for a manufacturing partner for a small batch of precision cast parts, specifically through investment casting (lost-wax) using SLA or 3D printed patterns. The project involves about 50 pieces in brass or nickel silver, with a target size of 100 mm and a focus on high detail and jewelry-grade surface quality. Can you let me know if this is within your capabilities? I'd appreciate recommendations on materials for the best finish, typical lead times for sampling and production, and a rough pricing structure (including tooling and unit costs). Also, do you offer finishes like polished or matte options suitable for high-detail cast parts? Looking forward to your insights!