sorry can't type chinese.
i know it is said safty level is under 4. but i rember somebody says
something about 1 recently?
a***x 发帖数: 26368
2
no. i said 0.001
【在 b******m 的大作中提到】 : sorry can't type chinese. : i know it is said safty level is under 4. but i rember somebody says : something about 1 recently?
t*******r 发帖数: 238
3
google it!
w*********0 发帖数: 5
4
I did the radon test recently and was told you need to fix the problem if it
's above 4. You may also consider to fix or re test if it's above 2. Please
ask your inspector and check the EPA website.
