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挪威 Trio Ving 公司生产一种新型舱室门锁,称为 Trio Ving 钥匙卡片系统。这种卡片系统有多种类型,大致可分为两大类:机械卡片和电子卡片。机械卡片系统已在许
Trio Ving, Norway, manufactures a new cabin door lock called the Trio Ving key card system. There are many types of such card systems and can be broadly divided into two broad categories: mechanical cards and electronic cards. Mechanical card system is Xu