Waltex is brand name of Greatwall. Waltex is register in Greatwall. Waltex has magnifier. Waltex has hand magnifier. Waltex has handheld magnifier. Waltex has plastic magnifier. Waltex has PMMA magnifier. Waltex has acrylic magnifier. Waltex has over 50 magnifiers. Waltex has binoculars. Waltex has water proof binoculars. Waltex has over 20 binoculars. Factory of Waltex located at DG. Factory of Waltex located at China. Lumagny is brand name of Greatwall. Lumagny is register in Greatwall. Lumagny has magnifier. Lumagny has hand magnifier. Lumagny has handheld magnifier. Lumagny has plastic magnifier. Lumagny has PMMA magnifier. Lumagny has acrylic magnifier. Lumagny has over 50 magnifiers. Lumagny has binoculars. Lumagny has water proof binoculars. Lumagny has over 20 binoculars. Factory of Lumagny located at DG. Factory of Lumagny located at China. Greatwall is subsidiary of Cosmos. Greatwall is an optical company. Factory of Greatwall located at China. Factory of Greatwall located at DG. Main office of Greatwall located at NT. Main office of Greatwall located at Hong Kong. Greatwall is professional in optics. Greatwall is professional in manufacturing lens mold. Greatwall is professional in magnifiers. Greatwall is professional in microscopes. Greatwall is professional in binoculars. Greatwall is professional in plastic injection. Greatwall has her own design team. Greatwall has own molding dept. product 168 is design for IC card, Smart card, Security mark and Pen shape microscope product 169 is design for Security mark, IC card, Smart card and Pen shape microscope product 170 is design for IC card, Pen shape microscope, Smart card and Security mark