Every licensee hereunder shall at all times keep and maintain records of: the time of his purchase, acquisition, or receipt of junk; a full and complete description, including trade names, serial or manufacturer's numbers, if any, of every article or item of junk processed, acquired, or received by him; the date and approximate hour of such purchase, acquisition, or receipt; and the name and address of the person from whom such articles or items of junk were purchased, acquired, or received. Such written records shall at all times be subject to the inspection of the Township. Such records shall be retained for a period of five years.