TWZ Corporation Public Company Limited is a Thailand-based company engaged in the sales of mobile phones and accessories. It supplies mobile phones, subscriber identity module (SIM) cards, refilled cards for digital global systems mobile (GSM) advance and digital GSM 1800, and accessories. It has the right to operate franchising business under the trademark of Telewiz from Advanced Info Service Public Company Limited. It is also a dealer of Wireless Device Supply Company Limited, which operates service dealer centers under the name of Mobile From Advance, providing after-sale services. The Company also distributes mobile phones under the brand TWZ, which are imported from China. In addition, it acts as mobile phone distributor for companies, including Wireless Device Supply Company Limited, M-Link Asia Corporation Public Company Limited, and United Distribution Business Company Limited.