1. The coils meet UL certification with high performance and strict specifications.2. Competitive price and highly quality of coils.3. Taiwan & china plant are also have a great capacity in production.4. Great configuration with a prefect array/no jumpers of coils.Specs of Coils:1. The Primary Coil is of the wire-wound type, has a square shape and consists of one layers of type 2 Litz wire.