pub mod trade {
    pub const DEFAULT_SLIPPAGE: u64 = 1000; // 10%
    pub const DEFAULT_TIP_UNIT_LIMIT: u32 = 150000;
    pub const DEFAULT_TIP_UNIT_PRICE: u64 = 500000;
    pub const DEFAULT_BUY_TIP_FEE: f64 = 0.0006;
    pub const DEFAULT_SELL_TIP_FEE: f64 = 0.0001;
    pub const DEFAULT_RPC_UNIT_LIMIT: u32 = 150000;
    pub const DEFAULT_RPC_UNIT_PRICE: u64 = 500000;
}