... with water 4. MOQ:10000pcs Product Name: LKT green teaching pen Style No.:PK-01/1Specification:Patented product, self-owned brand ... , environment protection designLkt green teaching pen can be recycled and you can refill ink. The nib ... cost, effectively achieve energy-efficient and eco-friendly.Uncap the pen ,the nib will not dry.Erase with water, no residual ...