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Taiwan Headquarter:

A-Four Tech Co., Ltd.

E-mail:info@a4tech.com

Tel: +886-2-2218-4952

6F, No. 108, Min-Chuan Rd., Hsin-Tien City, New Taipei City, Taiwan (R.O.C.)

China Factory:

5-Link Technology Co., Ltd.

E-mail:info@a4tech.com

Tel: +86 (769) 8209-7855

Xiwang Industrial District, Tiantangwei, Fenggang Town, Dongguan City, Guangdong, China

USA Branch Company:

A4Tech USA Co., Ltd.

E-mail:info-usa@a4tech.com

Tel: +1 (909) 628-8858

3929 Schaefer Ave, Chino CA, 91710, USA (For North America Inquiries only)

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