Cryptocurrency exchange guides and comparisons: Networks, fees, orders, and refunds.
Choose a topic based on your current question first, or start with an X vs Y comparison. Each guide provides checklists, comparison tables, and official sources; eligible completed FeilongEX orders can also apply for a fee refund.
Compare the options first, then check this quote
How to choose between USDT TRC20 and ERC20? First verify the receiving network
Should USDT choose TRC20 or ERC20? Start from the network supported by the recipient, verify the asset, address, and fees using four scenarios, then find the corresponding exchange route for TRON and Ethereum.
Read the guide X VS Y · Comparison guides02Floating and fixed rates: understanding quotes and payment deadlines
Compare the floating and fixed quotes actually returned, and understand the conditions for locking an amount. Includes historical query records for the same route, distinguishing quote creation time, order payment deadline, and arrival time.
Read the guide X VS Y · Comparison guides03How to compare two quotes for the same exchange? First fix the parameters, then look at estimated receipt
Compare exchange quotes using the same asset, network, amount, and mode. Attach two actual FeilongEX query records and separately verify estimated receipt, external fees, quote validity period, and conclusions that cannot be drawn.
Read the guide X VS Y · Comparison guides04What is the difference between a cross-chain swap and a cross-chain bridge? Start with asset and network goals
Distinguish between exchanging assets, changing networks, and same-network transfers, and understand the different mechanisms of cross-chain bridges, received tokens, and verification conditions. Use two teaching scenarios to determine actual needs and avoid choosing based only on names.
Read the guideComparison articles do not assume that a particular network, rate mode, or tool is always better. Once you have determined the option that suits you, use the current quote to verify the estimated received amount, and treat the eligible fee refund as a separate item after completion.
The three most common exchange questions
Wallet has USDT but cannot send? First check ETH, TRX, and network resources
USDT balance is sufficient but it says the fee is insufficient? Distinguish Ethereum's ETH Gas, TRON's bandwidth and energy, and understand wallet fee deductions and the conditions to check before exchange deposits.
Read the guide 02How to check a cryptocurrency exchange that keeps processing? Order status and transaction hash troubleshooting
When an exchange keeps showing confirming, exchanging, or sending, use the FeilongEX order number, deposit transaction hash, and outgoing record to determine the next step, and do not pay again.
Read the guide 03How is the actual arrival of a cryptocurrency exchange calculated? Fee and minimum amount verification
Distinguish the current estimated arrival, the order's actual deposit, the separately paid sending-side fee, and the actual outgoing transfer; verify the minimum amount, maximum limit, and fixed or floating rate for No KYC exchange.
Read the guideFirst confirm the USDT network, then check the ETH, TRX, or network resources needed to send; if an existing order has not arrived, troubleshoot by payment, confirmation, and outgoing records.
Which problem do you want to solve first?
Unfamiliar word? Check the glossary first ↗Networks and addresses
Verify item by item according to the receiving network, address, Memo/Tag, and sending asset; enter the corresponding swap route from the USDT TRC20, ERC20 selections.
Start reading based on your current question02 / 7 篇指南Fees and exchange rates
Start by comparing the estimated arrival, sending-side Gas, minimum amount, and quote mode, and read the FeilongEX historical quote samples using the time-stamped method.
Start reading based on your current question03 / 5 篇指南Order and arrival
Start with the order number and transaction hashes, and troubleshoot layer by layer through payment, network confirmation, swap, outgoing transfer, and crediting by the receiving platform.
Start reading based on your current questionMore exchange guides
10 篇 · 中文操作说明How to fill in Memo and Tag? Item-by-item verification of deposit, receiving, and refund tags
Use the direction of funds to determine where Memo or Destination Tag should be copied from and where it should be filled in; includes teaching examples, an evidence checklist after omission, and official XRP and Stellar materials.
Read the guide 02How to choose a No KYC cryptocurrency exchange platform? FeilongEX verification checklist
A dedicated contract guarantees that every FeilongEX exchange, regardless of amount, is 100% No KYC throughout the entire process, and FeilongEX assumes responsibility for service fulfillment. Verify the actual arrival, network, limits, order evidence, and fee refund.
Read the guide 03What is the difference between receiving, deposit, and refund addresses? Verify item by item before exchange
Follow a teaching exchange example to distinguish the order deposit address, target receiving address, refund address, and campaign refund address, and verify the asset, network, and Memo/Tag corresponding to each field.
Read the guide 04What is the difference between an order number and a transaction hash? Which one should be checked for exchange progress?
Use the order number to check the exchange process, and the transaction hash to check on-chain transfers. Understand how deposit, outgoing, and refund records correspond, why an estimated receipt does not mean payment has been made, and how to keep order inquiry information.
Read the guide 05What to do if the wrong transfer network was selected? Check the transaction first, then determine whether it can be handled
When you suspect the wrong network was used, how to verify the actual on-chain record, order requirements, and recipient, organize support materials, and understand the boundaries of further processing, refunds, and recovery.
Read the guide 06What to do if a fixed rate prompt expires? Distinguish quote expiration from order payment deadline
Understand the difference between the fixed quote validity period and the order payment deadline, and handle the cases of not yet created, created but not sent, and funds already sent separately.
Read the guide 07How to verify a USDT Ethereum receiving address? From format to receiving conditions
Is it enough for a USDT ERC20 receiving address to start with 0x? Verify the Ethereum mainnet, receiving asset, address source, and minimum deposit, and distinguish the steps for filling in the exchange receiving address and the fee refund address.
Read the guide 08How to apply for a cryptocurrency exchange fee refund? Calculation, address, and status
Use the FeilongEX exchange number to apply for a fee refund, verify the calculation basis for the actual fee or campaign subsidy, the USDT Ethereum address, and the application status, and distinguish refunds from coin returns.
Read the guide 09What to do when a BTC exchange is waiting for confirmation? Check step by step through transaction, block, and order
BTC sent but the exchange is still confirming? First verify whether the transaction was broadcast, the receiving output, block inclusion, and the FeilongEX order stage, then decide when to contact FeilongEX order help.
Read the guide 10How to observe USDT exchange quotes? 9 same-day samples and reading method
2026-09-10 — View the 9 read-only quote samples, understand how sending network, receiving network, floating and fixed modes are recorded separately, and what these data cannot prove.
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