... N.W.: 12kg C. CertificateCE, RoHSD. Company ProfileShenzhen Mingxinwei Electronic Co.,Ltd, established in 2005, is specializing in Calculator, ... than 500 employees. As the leading manufacture of this line , we never stop developing and innovation to meet markets ... from design, mould, injection, spraying, silk screen printing, bonding, assembly to packing. Faithfully welcome you to join us to develop ...