We have passed ISO9001:2015,CE,SGS approval and IEC report
EFD type Transformer Parameters| Model | Pin | Dimension |
| A | B | C | D | E |
| EFD-12 | 8 | 6 | 17 | 20 | 3.0 | 13.5 |
| EFD-15 | 10 | 7.3 | 18.2 | 21.35 | 2.5 | 15 |
| EFD-15 | 10 | 7.5 | 19.3 | 22.6 | 3.0 | 16.7 |
| EFD-20 | 10 | 9.4 | 25.3 | 27.7 | 3.75 | 21.7 |
| EFD-20 | 12 | 9.7 | 24 | 26.8 | 3 | 20 |
| EFD-25 | 10 | 13.4 | 29.7 | 35.4 | 5 | 25 |
| EFD-25 | 10 | 12.6 | 29.7 | 31.5 | 5 | 25 |
| EFD-30 | 12 | 12.6 | 31.6 | 35.5 | 5 | 30 |
5)Advantage:1.UL, CUL, CE, ISO9001:20152.We offer custom-made transformers, OEM and ODM are welcome3.We deliver the quality you expect at consistently competitive prices4.Transformer quality lifetime:10 Years.5.Specialty Sales service:5 -10 Years6.Transformers Test: 100% test before the shipmentAbout us:1). Tianjin Grewin Technology Co.,ltd. has always laying great emsis on our core business loso "Quality and Honesty First ".Grewin Mission: Growing together side by side,Mutual success hand in hand.Production:The following picture showed you about all finished transformer production package with export standard carton and strong pallets:2).Terms of Shipment:Within 10 working days after received related prepayment or L/C.3).Payment terms:(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days beforedelivery.(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.(3). Payment by T/T, if order amount is less than USD 20,000. 4).Flow chart of trading activities:| NO | Step | Days need |
| 1 | Request for quotation | 1 day |
| 2 | Making quotations | 1 day |
| 3 | Offer and counter offer | 3 days |
| 4 | Sending and receiving samples | 3-10 days |
| 5 | Sample confirmation | 3 days |
| 6 | Placing a firm order | 1 day |
| 7 | Paying and receiving the down payment | 1-4 day |
| 8 | Factory production & Quality inspection | 15-20 days |
| 9 | Paying and receiving the balance | 4 days |
| 10 | Delivery of goods | 1 days |
