namespace YLErp.BLL.MarginCalculation
{
    /// <summary>
    /// 上期预付金计算
    /// </summary>
    public class SQMarginCalculation : MarginCalculationBase
    {
        public static readonly SQMarginCalculation Instance;

        static SQMarginCalculation()
        {
            Instance = new SQMarginCalculation();
        }

        // 定义私有构造函数，使外界不能创建该类实例
        protected SQMarginCalculation()
        {
        }
    }
}