QB/T 2919-2007.Case and bag - Test method for resistance to fatigue of pull rod. 1范围 QB/T 2919规定了旅行箱...
QB轻工标准
QB轻工标准
QB轻工标准
QB/T 2919-2018 箱包拉杆耐疲劳试验方法
QB/T 2919-2018.Case and bag -Test method for resistance to fatigue of pull rod. 1范围 QB/T 2919规定了箱包用拉...