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GSM wireless solar SOS telephone
Our company’s patented GSM wireless solar SOS telephone has successfully launched into the Occident speedway market.
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Warmly welcome the leaders of Shanghai Metro line 10 visit our factory
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Guangzhou metro line 2 and 8
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Sutong bridge project
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Railway & Subway
Lan - Yan second railway line: East part of China Construction company: The Shandong Yantai Railway communication company Engineering Project: Shandong Laiyang train station electricity service section
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others
Beijing Bird-Nest Stadium
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