There're some international IC producer dedicated to making the IC chip. The main companys are: TI (USA), Atmel (the United States), Catalyst (the United States), the Motorola (the United States), NEC (Japan), Oki printing solutions developed (Japan), Toshiba (Japan), Hitachi (Japan), Philips (the Netherlands), Siemens (Germany), SGS (France), etc.

1. Siemens
Siemens company is one of main IC card suppliers in the wrold. The policy of Siemens company is providing a wide range of IC card for the card manufacturer. The special control and safety logic of IC card mainly used for electronic money, such as prepaid card and user card . In addition, IC chip card also used in access control system and health insurance. The primary chip of Siemens company are SLE4404, SLE4406, SLE4418, SLE4428, SLE4432/4442, SLE4436, etc.

2. Atmel
The United States Atmel company is one of the main producers for IC card, the IC card they offers are various and feature-rich, they are AT24C01A / 02/04/08 main / 16, AT93C46/56/57/66, AT88SC101, AT88SC102, AT88SC200

3. Philips
Philips company is famous chip maker in the world, provide contactless IC chip with encryption functionality is widely used in the world . The main chips which provided by this company is MIFARE Classic® 1K, MIFARE Classic® 4K, MIFARE® 1 Ultralight, etc.

4.ISSI
ISSI is a technology leader that designs, develops, and markets high performance integrated circuits for the following key markets: (i) automotive, (ii) communications, (iii) digital consumer, and (iv) industrial/medical/military.

Giantec Semiconductor Inc. is a fabless company spun off from ISSI（Integrated Silicon Solution，Inc.）. Giantec has R&D, manufacturing, marketing and sales teams located in Shanghai, China, plus sales branches in USA, Taiwan, Hong Kong & China.
Giantec will take responsibility of ISSI's ASSP business including both of ISSI's EEPROM and Smart Card product lines.