Day One Electronic (HK) Co., Ltd. is a high quality Manufacturing Business with the integration of R&D, production, marketing and services; Expert on the products of:
1) High & Low Frequency Transformer,
2) Line Filter,
3) Toroid Choke Coil,
4) Planar Transformer,
5) High Efficiency Switching Power Supply.
6) Massager Controller And Accessories
Product Applications:
 The major applications of our products are: Switching Power Supply, PC Mother Board, DVD & VCD Player, Digital Camera, PDA, MP3 Player, UPS and Monitor…etc.
Company Policies: 
 “Quality Utmost, continuous Improvement, Customer Satisfaction is always Most Important” is definitely our company’s Quality Policy. We have acquired the ISO9001:2000 Quality System.
 Our Management Policy is “Sincerity and Trusty”, with the aim of “High Quality”, “High Technology” and “High Efficiency”.
 In our factory, we maintain a sophisticated R&D engineering team, and also a team of skillful and hard-working members, with the advanced production equipment, for sure we will provide the best products and services to you.


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