李延民

李延民

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Experience

挑战者 @ 北京昊阳正泰室内环境监测中心 (Beijing)

2011-06-25 -- Present ( 8 year(s), 3 month(s) )

每个人定期做身体检查,其实居住的环境也是一样,就像我们都生活在同一个地球,要爱护这个村子。
一、个人家庭室内环境检测
二、工程竣工验收
1.节能2.空气3.其他

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