Chelmsford Assembly and Fabricating Service 25 Industrial Ave MFG Electronics,Inc., based in Billerica, MA, is a contract manufacturer catering to small lot PCB manufacturing. Chelmsford MA Assembly and Fabricating Service MFG Electronics www.mfge.com contract manufacturing PCB electronics leaded lead-free assemblies circuit boards through hold assembly contract manufacturing PCB electronics leaded lead-free assemblies circuit boards through hold assembly Business Reviews MFG Electronics Testimonials