S.C. Code § 12-36-1310
2003 Act No. 69, Section 3.W.2, provides as follows:
"2. This subsection takes effect upon approval by the Governor and applies to the purchase of subject tangible personal property made on or after that date."
2011 Act No. 32, Section 2.E., provides as follows:
"Notwithstanding the general effective date provided in this act, the provisions of this section take effect on the first day of the third month beginning after the date of approval of this act."