F20W/33-640

CWF灯管为美国冷白商店光源（Cool White Fluorescent） 色温：4150K ，美国客户常用；公司代理品牌有：飞利浦 PIHLIPS，奇异GE，喜万年 SYLVANIA等。

GE F20W/33-640 COOL WHITE Made in Hungary
GE F40W/33-640 COOL WHITE Made in Hungary
SYLVANIA F20T12/CW, Made in Canada
PHILIPS TLD 18W/33
SYLVANIA F20T12/CW Cool White USA
SYLVANIA F20T12/CW Cool White Canada
SYLVANIA F20W/33-640/RS COOL WHITE Made in Germany
SYLVANIA F40W/33-640/RS COOL WHITE Made in Germany
SYLVANIA F30T8/CW Cool White Made in USA
GE F36T12-CW COOL WHITE USA