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🌏 Global Payment Service

The Global Payment Service allows overseas users to pay immediately using their familiar local payment apps without separate currency exchange procedures.

Merchants can receive settlement in KRW without needing a separate foreign currency account. We currently support the two major payment methods most familiar to customers in the Greater China region: Alipay and WeChat Pay.


💳 Supported Payment Methods​

1. Alipay​

  • Overview: The #1 mobile payment platform in China, operated by Ant Group.
  • Features: The standard for online/offline payments in China, strongly integrated with the Alibaba ecosystem (e.g., Taobao).
  • Methods: Mobile Web/App Payment, QR Code Scan.

2. WeChat Pay​

  • Overview: A mobile wallet service embedded in 'WeChat', the national messenger app by Tencent.
  • Features: Extremely high frequency of small payments due to high accessibility based on the messenger app.
  • Methods: In-App Payment, QR Code Scan.

🔄 Service Flow​

Since global payments involve Real-time Exchange Rates, the flow differs slightly from general payments.

  1. Order Creation: The customer selects a payment method (Alipay or WeChat Pay).

    💡 Note: Alipay and WeChat Pay must be integrated using their respective separate API specifications.

  2. Payment Request: The merchant requests the transaction with the product amount in KRW.
  3. Exchange Rate Application: The global payment provider (Alipay/WeChat) applies the exchange rate at the time of payment and displays the amount converted to Local Currency (CNY) to the customer.
  4. Approval: The customer completes password entry or biometric authentication.

    ⚠️ For security, a secondary password entry may be requested intermittently.

  5. Settlement: We receive the funds from the overseas provider and settle them to the merchant in KRW on D+4 business days.
No FX Risk

Merchants do not need to worry about exchange rate fluctuations. You will be settled the exact approved KRW amount (minus fees). Any profit or loss due to exchange rate differences is borne by the customer (Payer).


📱 UI/UX Flow by Device​

Alipay automatically detects the UserAgent to route the flow, while WeChat Pay determines the payment method based on the tradeType parameter sent by the merchant.

🖥️ PC Web​

  • A QR Code for payment is generated on the screen.
  • The customer opens their smartphone app (Alipay/WeChat) and scans the QR code on the monitor to proceed.

📲 Mobile Web​

  • Operates via App-to-App.
  • When the payment button is clicked, the Alipay/WeChat app installed on the customer's smartphone launches automatically to the authentication screen.

💻 Development Checkpoints​

You must consider the following technical points during integration.

1. Currency Code​

Even for global payments, the merchant's requested currency must be KRW (Korean Won).

  • If you have a special requirement (e.g., DCC) to request in CNY or USD internally, a separate contract and parameter setting (currency: "USD") are required. Please contact the operations team.

2. Test Account (Sandbox)​

Global payments are difficult to test without real overseas accounts (requiring Chinese ID verification, etc.). Please request a test account granted by the overseas provider via the email below.

📧 Request Email: etrs@kicc.co.kr

Testing Precautions

When using a test account, you must strictly adhere to the following constraints:

  1. Small Amount: You must test with an amount less than 100 KRW.
  2. Mandatory Cancellation: You must cancel the transaction immediately after test approval.
  3. Timeout Caution: During payment approval, a secondary authentication (password entry) may be randomly requested. If not entered within approximately 25~26 seconds, the approval will be rejected due to timeout.