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ESD Journal Seal of Approval
Awarded to

Herald Datanetics Limited

for its
Tape Head Manufacturing Process
World Class - Class 0 Operations

The ESD Journal is pleased to announce the awarding of its 1st manufacturing"Seal of Approval" to








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

HDL is a leading Original Design Manufacturer (ODM) of magnetic recording tape heads used for the storage and back-up of large amounts of computer data.

As MR tape head is a kind of extremely ESD sensitive products, HDL has suffered the ESD yield loss. In 2005, HDL selected the Dangelmayer Associates, LLC as its ESD consulting service provider. In addition, HDL started using Six Sigma methodology to improve the ESD yield loss and built the ESD Program Management System (EPM). After a year, the ESD issue in HDL is greatly improved and well under control

Now HDL has become the first Class zero manufacturing company to receive the ESD Journal Seal of Approval.

For more information on HDL, please visit

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