5、Support chain tokens

Network	Token
Bitcoin	BTC
Ethereum	ETH
	USDT
	USDC
BSC	BNB
	USDT
	USDC
TRON	TRX
	USDT
Polygon	POL
	USDT
	USDC
AVALANCHE-C	AVAX
	USDT
	USDC
Litecoin	LTC
Dogecoin	DOGE