Худалдах тээрэм. тээрмийн цэвэр тээрэм 6407. 26 U.S. Code § 6407 - Date of allowance of refund or . Date of allowance of refund or credit The date on which the Secretary first authorizes the scheduling of an overassessment in respect of any internal revenue tax shall be considered as the date of allowance of refund or credit in respect of such tax.
Ball mill steel ball adding skills The ball mill steel ball ratio should be based on the effective length of your mill, whether it is equipped with a roller press, the size of the feed, what liner and structure to use, the expected sieve fineness and ratio, how many chromium balls to use, and the...