合勤科技（英语：ZyXEL Communications Corp.），电子公司，总部位于**新竹市，主要生产调制解调器以及其他网络设备。总部设置在**，在北美洲、欧洲及亚洲都有分公司，共有3200个员工主要分布在全世界七十个国家，以及在150个国家销售产品。合勤科技主要与互联网设备商、电信公司、互联网服务提供者、中小企业合作。

合勤科技主要提供OEM设备给互联网服务提供者（ISP），使用DSL的用户通常得到ISP业者提供的DSL调制解调器，通常在OEM提供的机器出货时，已经由ISP业者做缺省的设置。

ZyXEL Communications Corp. Founded in 1989, with over a quarter-century of innovations, ZyXEL Communications Corp. is a world-class networking company providing comprehensive and reliable Internet solutions. Delivering cutting-edge communications innovations to more than 400,000 businesses and 100 million consumers worldwide, today ZyXEL is one of the few companies in the world capable of offering complete networking solutions on broadband access, commercial networking, and home connectivity for Telcos, business, and home users. With a strong local presence in 150 markets around the world, ZyXEL is the ideal partner to deliver tailor-made solutions to meet customers’ local needs.