LONGTIME Electronics UL/CE approved Toroidal & EI Transformer for the specialist

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We have over 20 years’ experience in designing and manufacturing toroidal transformers, EI transformers, SMPS, etc. Our mission is to provide the products with higher quality, lower cost and shorter lead time to our clients forever. We have established long-term business relationship with our customers whom are from USA, UK, Germany, Spain, Italy, Australia, South Africa, and so on all over the world. Please feel free to send the details of your inquiries to us! Our toroidal & EI transformers are ranged from 1-10000VA with certificate UL (E497714) and CE (LCS1702272251S), SAA, C-Tick, RoHS, etc. and are mainly designed for Audio, Amplifier, Lighting, Power Supplies, etc. applications. Most of our toroidal/EI transformers are custom made according to the specifications from our customers.