UTC2003
10W Car Radio Audio Amplifier (Hangzhou Silan Microelectronics)
UTC2025
Thin-Film Cascadable Amplifier (Teledyne)
UTC2025
Stereo Audio Amplifier (Hangzhou Silan Microelectronics)
UTC2026
Thin-Film Cascadable Amplifier (TELEDYNE)
UTC2030
18W Hi-Fi Amplifier and 35W Driver (Hangzhou Silan)
UTC2206B
Linear Integrated Circuit (Hangzhou)
UTC22241
DUAL EQULIAZER AMPLIFIER (YW)
UTC2321
Thin-Film Cascadable Amplifier (Teledyne)
UTC2410
Tone Ringer (Hangzhou Silan Microelectronics)
UTC2411
Tone Ringer (Hangzhou Silan Microelectronics)