e-Business Value Chain 협협협협 협 협협 협협협협협 협협 , 협협협협 협협협 협협협협 협협협 협협협협협협 협협협협 Order Fulfillment 협 협협협협 협협 협협협 협협협협 협협 e-Marketing Supplier Customer E-CRM SCM Customer Supplier eMarketplace