... to SGS standard 2)Factory for O-ring 3)OEM of O-ring 4)Delivery time:within a week ... inspection, ingredients mixing, high temperature extrusion molding, secondary vulcanization and other production process, the main equipments are: vulcanizing machine, ... passed SGS,FDA and REACH test report:4. Mode of transportation and PackagePackage: Inner packed plastic bag and outer packed with cartonMode ...