KYM Technology Co., Ltd is a professional manufacturer in the wireless Bluetooth products include research, development, and production together, especially we built our loudspeaker factory which highly reliable on quality controlled and guarantee, till now we already for RoHS, CE, FCC, BQB. We are available with Bluetooth headphones, sport ear buds, TWS, and ANC earphones, etc. Welcome there is a chance we show you around our factory in TangXia Dongguan.