【Color】 A1 A2 A3 A3.5 A4 B1 B2 B3 B4 C1 C2 C3 C4 D2 D3 D4
【Model】 Classic
【Specifications】 4.5g/支 2g/支
The performance of the product was significantly improved on the basis of Universal
Higher strength: increased bending strength by 25% and compression strength by 30%.
Better feel: under the same test conditions, the adhesion of the equipment is smaller than the top products in the industry.