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CWF燈管為美國冷白商店光源(Cool White Fluorescent) 色溫：4150K ，美國客戶常用；公司代理品牌有：飛利浦 PIHLIPS，奇異GE，喜萬年 SYLVANIA等。

PHILIPS TL-D 18W/33-640 Made in Poland

PHILIPS TL-D 36W/33-640 Made in Poland
SYLVANIA F20T12/CW Cool White USA
SYLVANIA F20T12/CW Cool White Canada
SYLVANIA F20W/33-640/RS COOL WHITE Made in Germany
SYLVANIA F30W/33-640-T8 COOL WHITE Made in Germany
SYLVANIA INSTANT RAPID START  F20W/33-640/IRS Cool White
SYLVANIA F40W/33-640/IRS COOL WHITE Made in Germany
SYLVANIA F30T8/CW Cool White Made in USA
GE F20W/33-640 COOL WHITE Made in Hungary
GE F40W/33-640 COOL WHITE Made in Hungary
GE F20T12-CW-ECO 20W USA