Coema.org.cn is tracked by us since April, 2011. Over the time it has been ranked as high as 419 399 in the world, while most of its traffic comes from China, where it reached as high as 32 284 position. It was owned by several entities, from 程慧云 中国光学光电子行业协会 to 中国光学光电子行业协会, it was hosted by ChinaTelecom Group Beijing LtdCo, China Telecom and others.

Coema has a high Google pagerank and bad results in terms of Yandex topical citation index. We found that Coema.org.cn is poorly ‘socialized’ in respect to any social network. According to Google safe browsing analytics, Coema.org.cn is quite a safe domain with no visitor reviews.