As far as I understand, you are asking whether the stocking quantity can be 0. A stocking quantity of 0 means no stocking, which may result in failure to meet customer needs or to cope with emergencies. Therefore, it is recommended to maintain at least a certain stocking quantity to ensure the normal operation of the business and improve customer satisfaction. The determination of stocking quantity should be based on comprehensive consideration of factors such as market demand, supply chain reliability and cost-effectiveness.