The provincial fire department, on its microblog, attributed the blasts to an ammonia leak.
It provides services mainly through Sina.com (online news and content), Weibo.com (microblog) and Sina Mobile.
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Xinhua's microblog says the Chinese foreign minister's "solemn representations" to North Korea over the test yesterday were unprecedented.
The other leading microblog, called Tencent Weibo, now also requires new users to register with their real name.
Some people have multiple microblog accounts: Tencent has its own QQ-branded Weibo service.
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According to its official microblog, he jumped to his death on 22 August.
The disaster killed 119 people, and 54 people were being treated in hospitals, the provincial government said on its microblog.
Twitter-like Weibo microblog business, as the company tries to adapt its business to capture growth in China's mobile Internet market.
His microblog is among a number of sites that have been tracking the government's response to the new bird flu.
Indeed, it remains unclear how strictly it will be enforced, considering the booming market that already exists in microblog-related trickery.
Only Lady Gaga and Justin Beiber, both with over 11 million followers on Twitter, have more microblog fans than Yao Chen.
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This year, Sina named Yao queen of the microblog when she surpassed the number of followers of Oprah Winfrey in January.
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"The H7N9 bird flu is currently approaching, " Yang Yu, a commentator with state broadcaster CCTV, said in a post on his microblog.
On April 18th Qingdao's landscaping and forestry bureau apologised on an official microblog, admitting it had not consulted enough with the public.
Shenyang Daily recounts how her last microblog entry on Monday showed a photo of bread and fruit and the message, "My wonderful breakfast".
Prof Kong's angry retort on his microblog has since been deleted.
"The NBA lockout now comes to an end, so does A Lian's performance in the CBA, " said a statement posted on the team's official Twitter-like microblog.
The newspaper reported on its microblog that the fire spread rapidly, with industrial boilers exploding, and only a side door to the building was open with the rest of the exits locked.
Officials are attempting to make these tasks more manageable by requiring that users of the most prominent microblog service, Sina Weibo, register using their real name and identity-card number by March 16th.
Guan Kaiyuan, a 22-year-old law student at the China Institute of Industrial Relations in Beijing, had pointed out that Prof Kong's self-composed Tang Dynasty-style poem on his microblog did not rhyme correctly.
Anonymous members often publicise their activities on Twitter, but the microblog's limit of 140 characters means they redirect users to much longer "pastes" elsewhere to share details of hijacked emails, passwords and other information.
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Following a Beijing directive in late 2011, most local government agencies and other organizations have all established microblog accounts, which they use to keep the public informed about their latest activities and seek feedback on upcoming plans.
Microblog content is usually smaller in both file size (with many photos requiring you click them to see the full size) and content with just a few sentences written up instead of the longer format of blog posts favored by Blogger and WordPress, its powerhouse blogging competitors.
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