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Fuzhong,Shenzhen,Guangdong,China China
Personne àcontacter Ms. Sisian Chan
Nom de la société Fuzhong, Shenzhen, Guangdong
Stars could be recognized by constellation. Planetarium could cultivate children's interests to observe the changes of starts in the sky and explo
The fruit energy could produce electricity. Insert metal with different chemical reactivities into the fruits. It will form a battery because there ar
Sunlight can be converted directly into electricity with concentrating solar power, which normally focuses the sun's energy to boil water which is
It demonstrates how to receive frequency and explains the basic principle of the semiconductor radio. Assemble the radio very carefully and turn the
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