质量说明以及检尺长、检尺径和材积的确定

Group 1 - The delivery unit for log futures contracts is set at 90 cubic meters, with a tolerance of ±3 cubic meters for each batch [1] - The quality description provided by the seller must include details such as species, form, length, and appearance defects of the logs [1] - Logs of the same inspection batch must be of the same species if the species listed is certain types of pine, while different species are allowed for other types of coniferous logs [1] Group 2 - The measurement of a single log's diameter is determined by a designated quality inspection agency [2] - The total volume of logs in an inspection batch is calculated by summing the volumes of individual logs that meet the delivery quality standards [2] - The average diameter of logs in an inspection batch is derived from the total volume divided by the number of logs, followed by calculations based on the average volume and specified length [2] Group 3 - The quality description issued by the seller at the time of delivery can serve as the basis for settlement quality adjustments [3]