Coil Winding Specialist (CWS) Custom Magnetic Components. Made in California. CWS is your direct gateway to premium inductors, chokes, coils, and transformers - designed and manufactured entirely in the USA. Based in California since 2004, Coil Winding Specialist Inc. delivers full custom engineering and production services for medical, military, industrial, and HVAC applications. Key Features Made in USA Quality All components are designed and built in California by expert power electronics engineers. Secure Online Ordering Browse and purchase over 1,000 standard magnetic parts - from samples to small production runs. Fast, Transparent Quotes Get instant pricing without contacting multiple suppliers - perfect for fast budgeting and prototyping. Full-Service Manufacturing ISO-certified and ITAR-compliant, supporting design, prototyping, and production for regulated industries.