TPMS, Car Reversing Radar, Ultrasonic Sensor manufacturer / supplier in China, offering in Stock SMD2016 SMD3225 16MHz 24MHz 25MHz 27MHz 6PF 10PF ±10ppm ±20ppm4pin Quartz Crystal Resonator Automotive Grade, Hot Selling High Quality 2MHz High-Frequency Ultrasonic Water Flow Sensor for Swimming Pool Robot, 2MHz Piezoelectric Ultrasonic Transducer for Swimming Pool Robot and so on.