Giant Eagle seeks suppliers, private label expansion for online marketplace The retailer is partnering with RangeMe on a call for suppliers, including private label manufacturers. Another convenience operator calls on private brand suppliersGPM Investments, a subsidiary of Arko, is hosting its first Open Buying Day, and suppliers have until Sept. 5 to apply to pitch. GPM Expands Use of PriceNet System VPS Convenience: Life After Southeast Sale Growth is GPM's Investment GPM Helps Develop Latest Version of PriceNet GPM & 7-Eleven Lead CSNews Top 20 Growth Chains