BTcoil is a specialist manufacturer in air core coils. We have laid a solid foundation for our products and markets through many years development in china. Now we can produce all types of air core coils of. And we always work towards perfecting the standard of air coil industry. BTcoil adopts a full automatic mode of production, which puts our relationships with customers on a firm and friendly footing. Most importantly, it makes BTcoil a specialist manufacturer in air core coils in China.