Roncelli Plastics has been an industry pioneer since 1969, as a thermoplastics and composites manufacturer headquartered in Monrovia, California, with offices in San Jose, California; Dallas, Texas; Tampa, Florida; Chandler, Arizona and Cincinnati, Ohio.  Trusted by the world’s most prestigious brands for our leading edge technology, innovative operations, technical expertise and knowledgeable partnership.
Roncelli Plastics is a best in class contract manufacturer of Engineered Plastics parts and components for critical applications in the Aerospace, Bio Medical, Life Science & Space, Semiconductor, Defense, Oil & Gas Sectors. 

We partner with clients from prototype design through full production.  Our complete capabilities portfolio includes rapid prototype machining, CNC machining, Injection Molding, 3D Printing and Clean Room Assembly.  

Certifications Include:
ISO9001
AS9100D
ISO13485
ISO27001
ITAR

Semiconductor

Roncelli Plastics

Teams at Roncelli Plastics

Quality Assurance and Manufacturing

Leadership Team

Sales and Marketing