Del. Code tit. 16, § 2104

All places where any mattress, pillow, bolster, featherbed or comfortable is made, remade or renovated, or where materials for articles named in this section are prepared, or establishment where the articles are offered for sale or are in possession of any person with intent to sell, deliver or consign them, or establishment where sterilizing and disinfecting are performed, shall be subject to inspection by the Department of Health and Social Services to ascertain whether the materials and the finished articles enumerated in this section conform to the requirements of this chapter.