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About Us

Herald Datanetics Limited was established in 1985, as a subsidiary of Herald Holdings Limited, a publicly listed Hong Kong company.

HDL is a leading Original Design Manufacturer (ODM) and Original Equipment Manufacturer (OEM) specializing in the design and manufacture of computer magnetic recording heads, electronic products and other high tech devices. Furthermore, we also provide contract design & manufacturing services and solutions for customers with specific needs.

Our company head office is located in Hong Kong and our factory is located on 330,000 sq ft of land in Zhuhai, China, employing over a thousand workers and staff. HDL has an engineering service office in the USA and has in-house capability to design, prototype and manufacture a wide range of products for a large variety of applications.

Maintaining leadership in technology, quality, service, and productivity

HDL has put extensive R&D efforts in continuous development of new items to meet the market demand.  As an example, HDL is enhancing its development of "smart thermostats" that can be controlled remotely via various types of radio modules.

Over the many years, the company has been dedicated to maintaining its leadership in technology, quality, service, and productivity in order to meet the strict requirements from worldwide customers

HDL Management/Quality System

Having achieved ISO9001 qualification since 1994, HDL puts priority on quality improvement and technology innovation to produce cutting-edge, high performance products.

ISO 9001 Certified since 1994
ISO 14001 Certified since 2006
GSV Global Security Verification
Incorporated since 2009
EICC Electronic Industry Code of Conduct
Incorporated since 2009