(Earphone factory)
Dongguan Runtone Intelligence Co.,Ltd 
Add: Bo Hui Industrial Park, Fuxing Road, Liaobu Town, Dongguan City, Guangdong Provice, China  516029
Tel: 0769-87008191
 
(HK Company)    　
Runtone Electroacoustic Technology(HongKong) Co.,Ltd
Add: Unit 2，22/F Austin Plaza, 83 Austin Road Tsim Sa Tsui, Kowloon, HongKongUSTIN 
Tel:(852)34210437
Fax:（852）28875602
E-mail：info@runtone-acoustics.com