TWZ Corporation Public Company Limited is a Thailand-based distributor of telecommunication devices, which include mobile phones, subscriber identity module (SIM) cards, pre-paid cards, and accessories. The Company has five segments: communication equipment trading, real estate development, investment property, generating and selling electricity plasma, and electric vehicles. Its main business is selling mobile phone and communication equipment. Its product categories include mobile handset and accessory, SIM card: subscriber identification module, and other services. The Company sells various brands of mobile phones. The accessories sold by the Company include battery, power bank, headset, charging cable, case, protective film. Its other accessories include CCTV, speakers, air play, and charging station. It offers both post-paid and pre-paid SIM cards. Its after-sales service center, under the trademark TWZ Service Center is located at Ratchadaphisek Road.