XinZhengYu Technology Co.,Ltd was established in 2008. Our Factory Pass ISO9001:2015 and BSCI, XinZhengYu Technology Co.,Ltd has been specialized in this industry for over 12 years.With around 500 members and 14 productionlines,our factory produce over 300,000 ps earphones each month. Our Product We design and develop TWS earbuds,all of our earbuds have passed CE,ROHS,FCC certifications. Our two models have won Golden Ear Prize in 2019. ANC TWS Earbuds ENC TWS Earbuds 3C Fast Charging TWS Earbuds In-ear Induction TWS Earphones TWS Earbuds with Wireless Charging Case TWS Earbuds with Germicidal Function Product Application For business,For sports Our Certificate (1)ISO9001:2015,(2)BSCI, (2)Gloden Ear prize, (3)CE,ROHS,FCC ,Telec ect Production Equipment (1) Audio electracoustic tester (2) RF tester (3) Carving machine (4) Packaging machine (5) Ultrasonic welding machine (6) Automated dispensing machine (7) Electroacoustic tester (8) Hot melting tool Our service After-sales service: Warranty time:12 months Within 12 months,any quality problems,you can send back the earbuds to us,and we will exchange a new one for you.Customized Wireless Bluetooth Headphones website:http://www.aminytws.com/