... B. High elastic piston: piston with special high-elasticity, low temperature rubber piston, in the sprayed silicone oil imports, the sealing ... sterile, pyrogen-free, to ensure the treatment effect;b.low ethylene oxide residues, nurses will not inhale harmful residues ... can be used.Packaging: Small Package: Single packaging: LDPE (low-pressure polyethylene) In packaging: 100 pieces / box material: paper ...