Taiwan Semiconductor Manufacturing Company's (TSMC) "grand alliance" with its ecosystem partners and customers has already been enhanced for years, while China's so-called "red supply chain" is still in its early stages of formation, according to TSMC chairman Morris Chang.

The supply chain TSMC has long been pouring efforts to expand is already more powerful than the supply chain China's homegrown semiconductor industry is aggressively building, said Chang.

China's central government is supporting local chipmakers' development, by financing the build-up of advanced manufacturing processes, as well as the mergers and acquisitions domestically and internationally.

TSMC is also keeping an open attitude toward equity investments by China-based investors in the company, Chang indicated. TSMC is run by a professional management team focusing on maximizing shareholder value, and is not a family business, Chang said.

China's Tsinghua Unigroup previously expressed its interest in buying into Taiwan's chipmakers, such as MediaTek. The state-backed tech conglomerate has reached an agreement with Taiwan-based Powertech Technology (PTI) to buy a 25% stake in the packaging and testing company.

Buying into TSMC will be expensive, Chang noted. In the case of buying 25% of TSMC, the bidder will have to spend at least US$30 billion which is a lot of money, Chang said.

Chang also disclosed that TSMC is still evaluating the feasibility of building 12-inch production lines in China. There is no time-frame for when the facilities for advanced-node manufacturing will be set up, Chang added. TSMC already has an 8-inch wafer fab in Songjiang, Shanghai.

Chang made the remarks during a company event on November 7, when the company told employees that there will be no job cuts and mandatory unpaid leave during 2015 as TSMC continues to outperform the global semiconductor industry. TSMC will also raise its employees' base salaries next year.