TONYHK TNJ-034 铅笔涂层硬度计 (1000+50g)
制造商: TONYHK Model: TNJ-034 - 报价要求
- 联系
Tester: ensure that the weight of weigh 1000+50 g
Fix the pencil at 45°
Move the testing platform under specified speed so as to touch the refill
A set of zhonghua senior drawing pencil 6H-6B
Pare off wooden pencil preparation: lead with 3mm
Circle on the sandpaper, grinding pencil tip into plane and make the sharp edges
Testing must be in temperature 23±2℃, relative humidity 50±5%
Standards: GB/T 6739-1996
- 质量承诺
- 正品保修
- 送货到家
- 交易简单化