National Internal Revenue Code (NIRC)
Section 156. Labels and Form of Packages. - All articles of domestic manufacture subject to excise tax and all leaf tobacco shall be put up and prepared by the manufacturer or producer, when removed for sale or consumption, in such packages only and bearing such marks or brand as shall be prescribed in the rules and regulations promulgated by the Secretary of Finance; and goods of similar character imported into the Philippines shall likewise be packed and marked in such a manner as may be required.