Police in central China's Hunan province have discovered used medical supplies being "recycled" at a workshop, and tracked down a network of dealers across the country. Over 140 tonnes of used plastic medical supplies, including syringes and blood bags, were illegally sold off through an underground network of recyclers. The case came to light with the jailing of a dozen people found guilty of polluting the environment in Hunan province. Police said they were concerned that more of the dangerous waste materials might have been re-introduced into the manufacturing chain and reprocessed into plastic products for the food, medical, and building renovation industries. Liquid residue from IV bags was seen leaking onto the ground, and syringes were found with dried blood, reported Outlook, adding that there was a stench in the air. Most of the waste had come from public medical facilities, and investigators said several hospital property management companies have also been implicated in the case.