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  <xsd:element abstract="true" id="nhtc_statement-statement-note-4-fair-value-measurements-investments-details" name="statement-statement-note-4-fair-value-measurements-investments-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-4-fair-value-measurements-tables" name="statement-statement-note-4-fair-value-measurements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-5-leases-lease-cost-details" name="statement-statement-note-5-leases-lease-cost-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-5-leases-maturity-of-lease-liabilities-details" name="statement-statement-note-5-leases-maturity-of-lease-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-5-leases-tables" name="statement-statement-note-5-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-9-stockholders-equity-changes-in-accumulated-other-comprehensive-loss-details" name="statement-statement-note-9-stockholders-equity-changes-in-accumulated-other-comprehensive-loss-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-note-9-stockholders-equity-tables" name="statement-statement-note-9-stockholders-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="nhtc_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
