Form 8-K December 11, 2018
8K Notes_12.11.18_filed-6-12-19 _FINAL
Form 10-Q_September 30, 2018
XBRL Files To download, simply click the link to display the source page, and then right-click and Save As. Description Document XBRL INSTANCE DOCUMENT zgsi-20180930.xml XBRL TAXONOMY EXTENSION SCHEMA zgsi-20180930.xsd XBRL TAXONOMY EXTENSION CALCULATION LINKBASE zgsi-20180930_cal.xml XBRL TAXONOMY EXTENSION DEFINITION LINKBASE zgsi-20180930_def.xml XBRL TAXONOMY EXTENSION LABEL LINKBASE zgsi-20180930_lab.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE zgsi-20180930_pre.xml
Form 10-Q_June 30, 2018
XBRL Files To download, simply click the link to display the source page, and then right-click and Save As. Description Document XBRL INSTANCE DOCUMENT zgsi-20180630.xml XBRL TAXONOMY EXTENSION SCHEMA zgsi-20180630.xsd XBRL TAXONOMY EXTENSION CALCULATION LINKBASE zgsi-20180630_cal.xml XBRL TAXONOMY EXTENSION DEFINITION LINKBASE zgsi-20180630_def.xml XBRL TAXONOMY EXTENSION LABEL LINKBASE zgsi-20180630_lab.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE zgsi-20180630_pre.xml
10-Q 1st Quarter 2018
XBRL Files To download, simply click the link to display the source page, and then right-click and Save As. Description Document XBRL INSTANCE DOCUMENT zgsi-20180331.xml XBRL TAXONOMY EXTENSION SCHEMA zgsi-20180331.xsd XBRL TAXONOMY EXTENSION CALCULATION LINKBASE zgsi-20180331_cal.xml XBRL TAXONOMY EXTENSION DEFINITION LINKBASE zgsi-20180331_def.xml XBRL TAXONOMY EXTENSION LABEL LINKBASE zgsi-20180331_lab.xml XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE zgsi-20180331_pre.xml
Form 8-K/A July 25, 2018
ZGSI-8-K-A-ammendment_7.25.18_as filed
ZGSI-8-K_ 7.13.18
ZGSI 8-K_7.13.18_as filed
Form 8-K/A May 16, 2018
8-K_8.14.18_ALL-DOCS_clean_FINAL
Form 8-K March 14, 2018
8-K_8.14.18_ALL-DOCS_clean_FINAL
Form 8-K February 20, 2018
ZGSI-Form 8-K_2.20.18
Form 8-K January 25, 2018
Form-8k-25Jan2018