Qingyan Environmental Technology Co., Ltd. researches and develops environmental protection equipment in China. The company offers rapid purification of sewage using sedimentation integrated rectangular airlift loop reactors (RPIR); three-dimensional biological immobilized curtain series rapid biochemical sewage treatment technology; a set of process technology and equipment for high-concentration organic wastewater; and ammonia nitrogen degradation microbial agents. Qingyan Environmental Technology Co., Ltd. was founded in 2014 and is based in Shenzhen, China.