Sandisk is a world-renowned company. In 2009, the Chinese name of Sandisk was changed from "SanDisk" to "SanDisk". I see that your title says sanisk, not Sandisk. It seems that sanisk is a domestic copycat manufacturer that imitates Sandisk.

SanDisk is the world's largest supplier of flash data storage card products. The company was founded in 1988 by Dr. Harari Eli, an international authority in non-volatile storage technology. In November 1995, SanDisk became a publicly traded company, its Nasdaq stock code is SNDK. In 2004, SanDisk's revenue reached $1.8 billion. Currently, the company has more than 3,000 employees worldwide. The company is headquartered in Milpitas, California, USA. SanDisk's products are currently sold through more than 125,000 retail stores worldwide, including more than 23,000 retail stores in the Asia Pacific region (excluding Japan).

SanDisk's Asia Pacific headquarters is located in Hong Kong. SanDisk also has sales offices in Shanghai, Taipei and Seoul, and operates through original equipment manufacturer (OEM) channels and distributors in numerous Asian countries and regions including China, Taiwan, South Korea, Singapore, Thailand and the Philippines. A network of retailers sells their products.