package yu_bitget type ProductType string const ( USDT_FUTURES ProductType = "USDT-FUTURES" // USDT专业合约 COIN_FUTURES ProductType = "COIN-FUTURES" // 混合合约 USDC_FUTURES ProductType = "USDC-FUTURES" // USDC专业合约 SUSDT_FUTURES ProductType = "SUSDT-FUTURES" // USDT专业合约模拟盘 SCOIN_FUTURES ProductType = "SCOIN-FUTURES" // 混合合约模拟盘 SUSDC_FUTURES ProductType = "SUSDC-FUTURES" // USDC专业合约模拟盘 )