Facroty ncaj qha muab MWCNT, siab purity 99%, nrog cov kab sib txawv thiab ntev, zoo thiab ruaj khov zoo thiab cov khoom siv, tus nqi zoo, kev nplua nuj hauv kev tsim khoom thiab xa tawm.
8620-87226359
8620-87748917
sales@hwnanoparticles.com
14715261229 ib