product model：pvn-1581 ink color：black, blue pen specification：needle tip 0.38mm/0.5mm product packaging ：12pcs/dozon box, 72pcs/inner box, 1728pcs/outer carton
address：no.21xiangjiang 1rd qingdao china economic & technology development area tel：(86) 532—532-83716797 email：snowhite@snowhite.com.cn