Roncelli Plastics Inc is an advanced manufacturing company based in Los Angeles that provides precision engineering and production services across plastics, metals, and composites. They offer services including CNC machining, injection moulding, welding, assembly, 3D printing, and precision cleaning, working with specialised materials for demanding industries. The company combines US-based engineering with production capacity in Malaysia to deliver tight tolerances and reliable quality for aerospace, defence, semiconductor, and medical applications. They work best with clients who need complex, high-reliability components from prototype through to sustained production, and who value long-term manufacturing partnerships with consolidated suppliers.