... 45*20 mm 3.colour: blue Blue Toilet Bowl Cleaner Block, Blue Eco Toilet Block, Toilet Blue Block Product Feature:Durability: it can ... in deodorization, and keep perfume continuously, purify the air of the toilet; Safety: neutral product, without any causticity or toxicity ... in China. We has many years experience engage in toilet bowl cleaner, proven technique will let us provide you more competitive ...