Factory...... LIEFCO OPTICAL INC. Address︰ NO.66,LANE 20,DA FU ROAD, SHEN KANG ,TAICHUNG,TAIWAN,ROC TEL 886-4-25255283 　FAX 886-4-25250631 E-MAIL:liefco@liefco.com.tw http://www.liefco.com.tw 　 　 Taichung, Taiwan