1.factory directly supply 2.High quality and competitive price 3.MOQ 100pcs 4. suit for computer 5.SGS, ISO LFGB tests 1, The materials is high-grade silicone, conductive-rubber or metal plastic keypads and suitable for FDA, SGS, ROHS, HR4040 standard.2.Contact resistance: less than 200Ω, Operation temperature: -20 ~ 70°C.3, Designs: Any design and colors are available, According to your drawings ...