EECO Switch is a company specializing in the design, development, and manufacturing of digital switches, elastomer keypads, and membrane keypads for various industries such as medical equipment, industrial controls, and aircraft entertainment systems. They offer custom high-volume printed circuit boards through a partnership with Ta Chien Technology, utilizing Lead-Free, Silver-Through-Hole, and Copper-Through-Hole technologies to lower double-sided PCB costs. EECO is known for its sophisticated dry-film and screen-printing processes, automated etching equipment, and high-quality PCBs with fine-line designs. Ta Chien Technology, established in 1973, manufactures in Mainland China and Taiwan, serving major OEMs in consumer and industrial electronics.