Sigma-rt.com.cn is tracked by us since December, 2014. Over the time it has been ranked as high as 137 399 in the world, while most of its traffic comes from China, where it reached as high as 15 109 position. All this time it was owned by 成都杰华科技有限公司, it was hosted by CHINANET Sichuan province network, China Internet Network Information Center and others.

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