Awọn kiri lati wa aseyori ni "dara ọja Didara, reasonable Iye ati Lilo daradara Service" fun polima Pin insulator, tanganran insulator, eroja Post insulator, Boya yiyan a ti isiyi ọja lati wa katalogi tabi koni ina- iranlowo fun ohun elo, o le sọrọ si wa onibara ile-iṣẹ nipa rẹ Alagbase awọn ibeere. A ti sọ a ti nwa siwaju si cooperating pẹlu awọn ọrẹ lati gbogbo agbala aye.
