少妇被躁爽到高潮无码,少妇厨房与子伦HD,少妇真人直播免费视频,少妇苏霞肉欲第501章,少妇愉情理伦片BD,少妇精品无码一区二区免费视频

Potentiometer

Variable resistor is also called "rheostat" or "potentiometer", the pursuit of comfortable hand feeling and ease of use, there are unique tricks for types of shaft, without shaft , hollow , sliding Etc....? In the field of professional audio and car audios, the hand feeling of the potentiometer is sometimes decisive to the grade of a complete set of products.?Our products have accumulated rich achievements of more than 10 years of experiences. They are suitable for intercom volume switch, automobile power amplifier, speed controller, professional audio, sound console, electric fan, sports equipment, medical equipment, etc. Welcome to try!