在线免费观看国产精品成人_亚洲六月丁香色婷婷综合久久_欧美日韩中文在线观看_国产精品v欧美精品v日韩_国产在线看不卡一区二区
中文
HOME
ABOUT US
PRODUCTS
NEWS
CONTACT US
PRODUCTS
Formaldehyde
Ammonium hydroxide
Hexamethylenetetramine
Formaldehyde
It is a colorless gas with a pungent odor, which is irritating to the eyes, nose, etc.
ammonium hydroxide
Ammonia solution is colorless, transparent and has a pungent odor.
Hexamethylenetetramine
Flammable solid: May cause skin allergy reaction: May cause slight skin corrosion.
previous
1
2
next
HOME
CALL
CONTACT
在线免费观看国产精品成人_亚洲六月丁香色婷婷综合久久_欧美日韩中文在线观看_国产精品v欧美精品v日韩_国产在线看不卡一区二区
晉公網(wǎng)安備 4564545號
中文