Testing&Safety- Zhejiang Aitejia Stationery Co., Ltd.

Lead core strength tester: Test the force on the core tip

HB: Core tip is subjected to N≥9.31

2B: Core tip is subjected to N≥84

Lead Core Hardness Tester: Test lead core hardness

HB: Hardness 176~225 (HK) MPa

2B: Hardness 127~157 (HK) MPa

Colored pencil: Hardness 37~117 (HK) MPa

Lead wear meter: Test lead wear

HB: abrasion ≤1.8mm

2B: abrasion ≤2.5mm

Colored pencils: abrasion ≤4.3mm

Lead core slip tester: Test lead core slip

HB, 2B: ≤0.175

Lead core concentration meter: Test lead core concentration

HB: ≥0.3

2B: ≥0.38

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No 32. Jinshan Avenus, Pingdu Industrial Zone, Qingyuan Country, Lishui, Zhejiang, China

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