Several Chinese companies say they will no longer do business with South Korea's Lotte Group, after it agreed on Monday to provide land to host a US anti-missile system that Beijing sees as a threat to national security.
Authorities have also taken law enforcement action over the past few days against South Korea's fifth-largest conglomerate, which has more than 80 supermarkets in China, but did not connect the move to the deployment of the Terminal High-Altitude Area Defence system (THAAD).
Public resentment against Lotte has risen rapidly over the last few days, with protesters in several cities calling for a boycott of the group.
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The Legal Daily reported on Thursday that officials in Anhui confiscated 30 "illegal radio transmission" units from a Lotte supermarket and fined the company 20,000 yuan (US$2,900).
The report said Anhui communications authorities found abnormal signals coming from a Lotte supermarket in Wuhui on Tuesday.