hat
3. Èske li gen silfat kwiv? Yon: Non selan an se anviwònman zanmitay, pa gen okenn mal nan imen, ki san danje yo itilize. Anti rouye ak anti korozivite.
eng
3. Does it contain copper sulfate? A: No. The sealant is environment friendly, no harm to human, safe to use. Anti rust and anti corrosive.