Augment mainly manufacture Surge protective device that protect equipments very well without grounding and it passed the IS09001 international quality system authentication, until to now it is still qualified. all arresters can still protect equipments very well without grounding whether thunder strong or not, which called ?Equipotential? SPD, covering Communication, CATV, Security monitoring, Computer, Industrial control, Office automation, Remote education etc. Using international lead-edge technologies that Protection effect has nothing to do with ground resistance.