A packaging system for hydrating sterile devices without comprising the integrity of the sterilization. The retrotransposon comprises a nucleotide sequence selected from a group consisting of a nucleotide sequence of SEQ ID NO: 1, a nucleotide sequence of SEQ ID NO: 2, a nucleotide sequence of SEQ ID NO: 3, and a nucleotide sequence encoding a polypeptide of an amino acid sequence of SEQ ID NO: 4. In use, a bottle rocket can be partially inserted into the valve passageway that is held open. Furthermore, the carbon nano-particle has the excellent electric conductivity and the ferromagnetic property, and can be made by a novel, low cost method entirely different from those of fullerene and carbon nanotube.