SYNTHETIC METALS

VIET TQQ, NHU TH, THINH DB, TRINH DN, GIANG NTH, DAT NM, HAI ND, NAM HM, PHONG MT, HIEU NH

OPTICAL MATERIALS

PHUC NH, LIN TH, VIET TQQ, DAT NM, DAT NT, MINH DTC, GIANG NTH, HUONG QTT, HANH NT, PHONG MT, HIEU NH