... The introduction of transformers of our main product: EC, EE.EI and PQ type high frequency switch transformer EP type magnet ... product: PQ 2020 2016 2625 3230 3535 4040 5050 EI, EE series: EI, EE-5.0, 8.3, 10, 13, 16, 19 ... , 30The introduction of transformers of our main product: EC, EE.EI and PQ type high frequency switch transformer EP type magnet ...