CHCH Technology Limited founded in 2010 in Shenzhen, China, focus on audio products more than 10 years. From R&D, ID Design, production, to sales, we commits to offer high quality, high performance and fashion smart TWS earphones, Bt sports earhones, wearable Bt headphones and other electronic audio products to the customer around the world. CHCH Technology Limited owns a senior R&D team of 8 engineers accumulated with 10 years' professional audio products experiences, has made more than 30 patents on intellectual property rights, our enigneer team can help customer fulfill your ODM, OEM needs with international vision and technological innovation. With the stalbe development of over 10years, CHCH Technology Limited owns 5 production lines with more than 100 workers and 3000 square meters, capacity can reach 300K PCS earphones per month. The production is equipped with advanced testing Instruments(RF, CRY SOUND...), and professional quality control system, to ensure efficient and qualified production. CHCH Technology Limited fully implement ISO 9001-2015 quality management system, from IQC imcoming inspection to the final OQC shipping certification. Most of our products have won international certification of BQB/CE/RoHS/FCC/REACH. Our main markets is from USA, Europe, India, and Southeast Asia, and most customers is do business online such as on Amazon, Ebay, Flipcart, Shopee...We hope to cooperate with you sincerely, and grow together in future.