1.durable life,at least for 10 years 2.mainly export to America,Asia,Europe,Africa,etc ... (SIZE)40*32*25 mm³Printin process1,Paint/Vanish 2,Stamp/PrintTestPressure test;tensile test;vibration test;fatigue test; ... own R&D,we r able to design ur new products!6,We have an very efficient product line ... ,production time would be very short! 7,Some new models that we haven't produced before,we can develop ...