BTcoil is a leading air coil manufacturer. We have sufficient experience serving the world 500 top companies in China. Setting the standard of air coil industry is the requirement of our long term development. We can supply added-value service and latest technology to our customers. We focus on steady and continuous development in China. We have built 3 full automatic factories in Shenzhen City , Zhongshan City and Kunshan City in China. Latest and swiftest service is the power of our long term development in competitive market. BTcoil manufactures all kinds of precision air coil, including self supporting air coils, flat wire coils, SMD air coils, Miniature spring indutors. Our air coils are widely used in electronic communication industry, automobile industry, electrical control industry and so on. We only supply lead free products, protecting environment and fulfilling social responsibilities is our consistent work style. We have acquired ISO9001: 2000 and ISO14001:2004 certificates. Continuous Development and Minded Operation is the way of running our company. Building long term and harmonious collaboration with you is what we long for.