Test item 测试名称: Self-supporting energized devices for the height adjustment of office work chairs 调节办公座椅高度用自承重增能装置
Sample size 送样规格: 3pcs finished products + manual
Lead time 测试周期:45 working days
Others 其他:
气压杆产品的中管(一般为直径28mm的管子)是什么材质?
表面处理是什么方式?
申请几级测试?
Sample for reference 参考图片: