Cleaning tip: Add 2 spoons of Caustic soda to boiling hot water. Immerse chimney filters in it for 15-20 minutes. Rinse with normal water. You will get... | By Junk2BeautyFacebook
Reaction between caustic soda flakes and hot water RASTAK Manufacturer of caustic soda flakes | By Rastakkimya companyFacebook
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