Workers clashed with constabulary astatine a Covid trial kit mill successful China, videos posted connected societal media showed.
The protestation started connected Saturday aft a abrupt announcement of layoffs and disputes implicit wages successful the south-western metropolis of Chongqing.
Some videos were filmed astatine Zybio, a institution specializing successful vitro diagnostic reagents and equipment.
China's extremity to its zero-Covid argumentation has seen requirements for antagonistic trial results dropped crossed the country.
In 1 video, hundreds of workers could beryllium seen gathering extracurricular the factory, immoderate of them shouting: "Give america our wealth back!"
Boxes of antigen trial kits could beryllium seen strewn connected the ground.
Some videos suggest aboriginal astatine nighttime immoderate protesters throwing chairs, crates and postulation cones astatine a radical of riot constabulary deployed astatine the scene, forcing the officers to retreat.
"It is lone close and due that you request to wage wealth backmost if you beryllium others, this is the roadworthy of demanding unpaid salary," captions connected the videos read.
Posts online said the protestation started connected Saturday morning, erstwhile workers were told they were efficaciously laid disconnected and that salaries would not correspond to those promised by the workers' agents.
Although governmental demonstrations are uncommon successful China, protests implicit labour issues and demonstrations targeting circumstantial companies hap frequently.
China's rigid zero-Covid argumentation yet led to wide protests successful November and the authorities announced a assistance of astir restrictions soon after.