hat
2. ogmante fòs koneksyon: soft, tèlke ba entansite ka sèvi pou aliminyòm ak ayezyòm alyaj materyèl, bwa, plastik, apòt yo ak konsa fasil pou efòmasyon ak fòs ba materyèl, evite glise swa, fenomèn tankou mal dan.
eng
2.Increase connection strength: soft, such as low intensity can be used for aluminum and magnesium alloy materials, wood, plastic, rubber and so on easy to deformation and low strength materials, avoid slippery silk, the phenomenon such as wrong tooth.