Constant CMD_CRYPTO_MAX_BUY_SELL_QTY 

pub const CMD_CRYPTO_MAX_BUY_SELL_QTY: u16 = 20622;

Crypto 最大可买卖。Ref: NNBase_Define_ProtoCmd.h:66-81 / NNProto_Trd_MaxQtyCrypto.cpp:14-38.