N.H. Rev. Stat. § 339:56
No person shall manufacture for purposes of sale, sell, offer or expose for sale, or have in possession with intent to sell, any mattress, pillow, cushion, muff bed, quilt, upholstered furniture or similar article having a filling of hair, down, feathers, wool, cotton, kapok or other material, unless there is plainly marked upon each such article, or upon a tag of some durable substance sewed thereon, or otherwise securely attached thereto, a statement of the kind of material used for filling in the manufacture of such article, the name of the manufacturer or vendor, and also, if the material has been previously used, the word, secondhand. Provided, that no secondhand materials, the use of which is not prohibited under RSA 339:59 and which may be deemed by the department of health and human services suitable for reuse, shall be used unless the same have been disinfected by a method or methods approved by the said department.
RSA 339:56
1925, 157:1. PL 162 :58. 1941, 162:1. RL 193:58. RSA 339:56. 1983, 291:1, I. 1995, 310:175, 181, eff. Nov. 1, 1995.