In what Taipei has described as” odd,” Chinese authorities have detained four employees of Taiwan’s phone company, Foxconn.
The people were arrested in Zhengzhou in Henan state on “breach of faith” costs, Taiwan’s Mainland Affairs Council said in a statement.
The BBC has contacted Foxconn for remark.
The business, which produces iPhones for US tech leader Apple, is also one of the largest companies in the world, with significant factories in China.
Chinese authorities speculated that the detentions may be instances of “abuse of authority” by Chinese police officials.
And asserted that the situation undermines the assurance of Chinese businesses.
In October last year, China’s tax and land authorities launched an investigation into the company.
At that time, Foxconn’s leader Terry Gou was running as an independent member in Taiwan’s presidential election.
After China released rules in June detailing criminal penalties for what Beijing called” the Taiwan freedom” separatists, Taiwan has urged its citizens to “avoid non-essential go” to the island as well as Hong Kong and Macau.
The Zhengzhou stock from Foxconn is the largest phone factory in the world and is renowned as “iPhone City.”
The business is one of many Chinese companies that has over the past 40 years looked past a tense political gap and established factories in China.