About Roncelli Technologies
Advanced Manufacturing Solutions for Critical Industries
Roncelli Technologies is a global manufacturing partner delivering precision engineered components, assemblies, and turnkey solutions across the aerospace, semiconductor, medical, defense, space, and industrial markets. With a legacy rooted in advanced manufacturing excellence since 1969, Roncelli combines cutting-edge technologies, deep material expertise, and robust quality systems to support customers from prototype development through production scale-up and lifecycle support.
We are committed to innovation, quality, and responsiveness — providing tailored manufacturing solutions that help customers meet demanding specifications, tight tolerances, and critical performance requirements.
Our Manufacturing Expertise
Since its founding over five decades ago, Roncelli has evolved into a multi-capability manufacturing organization that delivers complex components and assemblies using a variety of materials and production processes. Our capabilities include precision machining, additive manufacturing, molded solutions, assembly integration, and precision finishing — all backed by certified quality practices and a commitment to traceability.
Multi-Material Precision Manufacturing
Rather than focusing on a single material family, Roncelli’s platform supports a broad material portfolio and manufacturing approach:
Composite and advanced materials machining
Plastics and engineered thermoplastics
Metals and metal-alloy solutions
Elastomer and gasket fabrication
Carbon and lightweight structural materials
Our team partners with engineers to identify optimal materials and processes that balance performance, manufacturability, cost, and regulatory requirements.
Diverse Process Capabilities
Roncelli’s manufacturing capabilities are designed to support every stage of product development and delivery:
Precision CNC machining
High-speed, multi-axis machining for tight tolerances and complex geometries.
Additive Manufacturing (3D Printing)
Rapid prototype and production-ready parts with accelerated lead times.
Injection Molding
Scalable molding for complex, high-quality parts.
Tooling & Subassembly Integration
Welding, bonded assemblies, cleanroom packaging, and hardware installation.
Precision Cleaning & Surface Preparation
Tailored cleaning processes suitable for regulated environments.
Global Footprint — Strength in Local & International Presence
Roncelli’s commitment to serving global customers extends beyond our flagship headquarters in Monrovia, California, and regional U.S. offices. Our Malaysia facility — Roncelli Plastics Sdn Bhd — exemplifies our strategic global expansion, offering precision manufacturing and engineering services as a high-value manufacturing hub in Southeast Asia. This plant brings Roncelli’s world-class process controls and quality standards to new markets, enhancing supply chain resiliency and broadening our ability to serve customers worldwide.
Located in Penang, the Malaysia plant plays a vital role in supporting both regional customer needs and the broader global customer base, contributing to advanced precision machining and high-value manufacturing ecosystems.
Our Team
Gino Roncelli
Founder & Chair Emeritus
Andrew Ewing
President
Ahmad Zamsari
General Manager of Operations – Malaysia
Riley Cole
Chairman of the Board
Mario Valdez
Vice President of Sales
Ted Stevens
Director of Quality
Chris Cole
Chief Executive Officer
Oscar Rodriguez
General Manager of Operations – USA
Desiree Inzunza
Director of Human Resources – USA
Quality, Certifications & Industry Compliance
Quality is foundational to Roncelli’s work. We maintain rigorous quality systems and certifications to meet customer requirements:
ISO 9001 Registered
AS9100D Registered
ISO 13485 Registered
ISO 27001 Registered
ITAR Registered
CMMC COMPLIANT
Controlled PPAP Process
NIST 800-171 / DFARS Compliant
These certifications reflect our consistent investment in quality frameworks that support regulated industries, traceability, and controlled manufacturing environments.
Partner With Roncelli Technologies
From concept to production and long-term support, Roncelli Technologies is your partner in advanced manufacturing solutions. Contact us to explore how we can help accelerate performance, optimize production, and drive innovation across your next project.