Josiah Barnabas 0 Report post Posted September 28, 2020 Are any tips concerned about radon levels in the house? What is a safe level of radon? Share this post Link to post Share on other sites
ChiaWei 0 Report post Posted October 5, 2020 0.08PPM for Formaldehyde Level. Formaldehyde is cancer causing substance and will cause birth defect, which emitted from paint, adhesive of the carpentry, vinyl flooring, etc. Share this post Link to post Share on other sites