10-Q_6.30.15

XBRL Files


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zgsi-20150630.xml XBRL INSTANCE DOCUMENT
zgsi-20150630.xsd XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
zgsi-20150630_cal.xml XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
zgsi-20150630_def.xml XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
zgsi-20150630_lab.xml XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
zgsi-20150630_pre.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT