Service Hotline：4008-771-883

Support hotline：13533131330

Technical Support：13660169050

E-mail：jusound@greatwallaudio.com

Tel：020-34511002

Fax：020-34511003

China Marketing Headquarters

Address: Zhunsheng Building, Sheshan West Road, Panyu District, Guangzhou

Hong Kong Telephone

00852-30717745

Fax

00852-30775905

Hong Kong Marketing Center

Address: Room 704, Kai Tu Development Building, 33 Mong Kok Road, Kowloon, Hong Kong