China Lumena New Materials (commonly called Lumena) is a Chinese mining and manufacturing company primarily engaged in the production of polyphenylene sulfide (PPS), an industrial plastic. According to a market research report in 2016, the company is among the largest producers of PPS. Lumena mines the glauberite and associated class of minerals that is the raw ingredient used by the company to manufacture PPS and thenardite products including laxatives.