... seal: Spec.:13mm, 20mm, 28mm, 32mm. ISO standard. Any color can be order. Logo and texts can be printed on the seal ... Aluminium seal:Spec.:13mm, 20mm, 28mm, 32mm.Standard: ISO ... order.Logo and text can be printed on the seal.Output: 20,000,000pcs/month.Quality control: Modern ... :1999 standard. Workshop: clean modern workshop. aluminium seal for antibiotics