HEC, Inc. Hooray USA is the worldwide manufacturer of frequency control products dedicated to providing unsurpassed quality while maintaining competitive pricing and delivery schedules. Our network of factory affiliates operate worldwide, with automated facilities in Japan, Korea, and Hong Kong as well as in our USA Headquarters. This diversity in source of manufacture keeps us abreast of the latest technologies and enables us to offer highly competitive pricing. Empowered by a strong technical Engineering and Research & Development Team, HEC, Inc. develops innovative frequency control devices and tight specification tolerances beyond industry standards. Along with quartz crystals and clock oscillators, the HEC, Inc. product line features the most compact and reliable TCXO, VCTCXO, VCXO, OCXO, Ceramic Resonators and Filters, Monolithic Crystal Filters, and SAW devices in the market. HEC, Inc. products are RoHS and REACH compliant and meet the strictest of standards including MIL STD and ISO 90001:2009/ISO 9001:2008/ISO 14001:2009/ ISO 14001:2004.