Material: 100% food-grade silicone materialTypes: bottle stopper, odorless, airproof.size: 13mm, 20mmcolor: grey, black, green, redFeature: A) designed as per GMP standards, the workshops of vulcanization, die cutting, washing and packaging are up to the relative cleanness classes.B) quality management system established and consummated as per GMP standards. C) automatic pre-forming and slice cutting process is adopted. D) advanced full automatic vacuum making vulcanization process is adopted E) automatic stopper washing production line with powerful vibrating and blewing washing functions.
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