APPENDIX 
Declaration of Conformity 
 
We 
GOOD WILL INSTRUMENT CO., LTD. 
(1) No.7-1, Zhongxing Rd., Tucheng Dist., xinbei City 236, Taiwan  
(2) No. 69, Lu San Road, Suzhou City (Xin Qu), Jiangsu Sheng, China 
declare, that the below mentioned product 
Type of Product: Power Supply 
Model Number: GPD-2303S/ GPD-3303S / GPD-4303S 
are herewith confirmed to comply with the requirements set out in the 
Council Directive on the Approximation of the Law of Member States 
relating to Electromagnetic Compatibility (2004/108/EC) and Low 
Voltage Directive (2006/95/EC). 
For the evaluation regarding the Electromagnetic Compatibility and 
Low Voltage Directive, the following standards were applied: 
◎ EMC 
EN 61326-1: 2006 Electrical equipment for measurement, control and 
laboratory use  –– EMC requirements 
Conducted Emission 
Radiated Emission 
ClassB
Electrostatic Discharge 
EN 61000-4-2: 2008 
EN 55011: 2009 + A1: 2010  Radiated Immunity 
EN 61000-4-3: 2006+A2:2010 
Current Harmonics 
EN 61000-3-2: 2006+A2:2009 
Electrical Fast Transients 
EN 61000-4-4: 2004+A1:2010 
Voltage Fluctuations 
EN 61000-3-3: 2008 
Surge Immunity 
EN 61000-4-5: 2005 
------------------------- Conducted Susceptibility 
EN 61000-4-6:2008 
-------------------------  Power Frequency Magnetic Field 
EN 61000-4-8: 2009 
-------------------------  Voltage Dip/ Interruption 
EN 61000-4-11: 2004 
◎ Safety 
Low Voltage Equipment Directive 2006/95/EC 
Safety Requirements 
IEC/EN 61010-1: 2001(Second Edition) 
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