... are welcome 3.Various colors and sizes are available Productcustom high quality silicone o ringMaterialsilicone/VMQFeature Resistance to abrasion, electricHardness 30-90 ... as the color card Size standard or as your design Quality Certification ISO9001:2008, ISO/TS 16949:2009 MOQ 2000 pieces ... mail, etc. Term of payment PayPal, Western Union, Money Gram, T/T in advance, L/C at sight, etc. OEM or ODM ...