QUALITY CONTROL: The evaluating of an item or process to determine if it meets predetermined guidelines and specifications.
QUANTITATIVE RESTRICTIONS: Explicit limits or quotas on physical amounts of particular commodities that can be imported or exported during a specified time period by volume or value.
QUOTA (absolute): Quota which permits a limited number of units of specified merchandise to be entered for consumption during specific periods. (19CFR, Sec. 132.1)
QUOTA (Tariff rate): Quota which permits a specified quantity of merchandise to be entered for consumption at a reduced duty rate during a specific period.