TXC
Seiko Epson
Nihon Dempa Kogyo (NDK)
Kyocera Crystal Device (KCD)
Daishinku Corp (KDS)
Vectron (Microchip)
Rakon
TKD Science and Technology
Hosonic Electronic
Murata/TEW
Siward Crystal Technology
Micro Crystal
Diodes Incorporated
Harmony Electronics Corp (H.ELE.)
Failong Crystal Technologies
Tai-Saw Technology
River Eletec
Taitien
AnHui Jing Sai Technology
ZheJiang East Crystal
Abracon
NSK (JenJaan Quartek Corporation)
Aker Technology