并非所有出售电源产品的品牌都自行生产电源产品，可以说在DIY市场上出现的大多数电源都是非所贴之牌自己工厂生产的产品，而是交给其他工厂OEM。 　　但是真实生产者并非无迹可寻，通常电源铭牌的UL Logo下的号码（E******）揭示了电源产品的真实制造者。
　　大家可以在这个页面查询UL Logo下号码与之对应的厂商：
　　http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/gfilenbr.html
　　为了方便大家查询，下面列出已经查核的厂商列表，供大家参考。
E104405 Sea Sonic Electronics Co Ltd
E104407 Leadman Electronics Co Ltd
E119368 Samsung Electro-Mechanics Co Ltd
E126556 Taiwan Youngyear Electronics Co Ltd
E130843 Topower Computer Industrial Co Ltd
E131500 Pc Power & Cooling Inc
E131881 Delta Electronics Inc
E134014 Enermax Technology Corp
E134129 Powertech Systems Co Ltd
E138711 Moretec Electronics Industrial Co Ltd
E141182 Morex Information Enterprise Co Ltd
E141400 Seventeam Electronics Co Ltd
E142789 Nidec Potrans Corp
E143709 Hipro Electronics Co Ltd
E143756 Zippy Technology Corp
E144195 Sirtec International Co Ltd
E147055 Mapower Electronics Co Ltd
E156513 Power-Win Technology Corp
E161451 Channel Well Technology Co Ltd
E161557 Fortrex Electronic Co Ltd
E161936 Nipron Co Ltd
E164554 L & C Technology Inc
E166947 Enhance Electronics Co Ltd
E172499 Win-Tact Electronics Corp
E175472 Fore Point Industrial Ltd
E175856 Delta Electronics Inc
E176105 Antec Inc
E176239 Etasis Inc
E178102 Jou Jye Electronic Co Ltd
E178768 Wintech Electronics Corp
E181356 Shenzhen Chi Yuan Industrial Co Ltd
E185650 King Case Industrial Co Ltd
E186010 Atng Power Co Ltd
E190414 Fsp Group Inc
E191395 Delta Electronics (Thailand) Public Co Ltd
E193726 Ablecom Technology Inc
E193807 Powertech Systems Co Ltd
E199068 Delta Electronics Inc
E199442 Heroichi Electronic Co Ltd
E199529 Macron Power Technology Ltd
E203196 Deer Computer Co Ltd
E211481 Codegen Technology Co Ltd
E217431 Delta Electronics Inc
E243823 OCZ Technology
E313881 Delta Electronics Inc