This concerns harmonization with international norms.

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Note added at 21 mins (2016-07-01 19:21:07 GMT)
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Lapp’s harmonized and CE-conforming cables are utilized on electronic
and electrical equipment intended for use in Europe.
The development and implementation of common standards for the
European marketplace facilitates export trade to European countries.
An international safety standards agency called CENELEC (European
Committee for Electrotechnical Standardization) was formed to develop electrical standards that would be universally acceptable to all CENELEC member nations, which are noted in the table below.

Harmonized Wire Coding System
Basic Type
H Harmonized type
A National type

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

http://www.lappusa.com/harmonized-overview.htm
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Harmonized Cordage Cordage that is manufactured in accordance with CENELEC’s Harmonization Documents HD-21 or HD-22. In order to identify a harmonized wire or cable, one of the following identification methods are required; (1) Printed letters (HAR) on either the overall jacket or insulation or (2) Printed tape or identification threads.

http://internationalconfigurations.com/glossary.php