litmus paper
It has the characteristics of pure paper, high strength, good transparency, no deformation, light resistance, high temperature resistance, anti-aging, etc.
It has the characteristics of pure paper, high strength, good transparency, no deformation, light resistance, high temperature resistance, anti-aging, etc. Sulfuric acid paper is made of fine plant fibers interwoven with each other, free beating in a humid state, without sizing, without adding Filling and papermaking are soaked in 72% concentrated sulfuric acid for 2 to 3 seconds, washed with water, treated with glycerin, and dried to form a hard film-type material. The texture of sulfate paper is solid, dense and slightly transparent. It has strong resistance to the penetration of oil and water, is airtight, and has high wet strength. It can be waterproof, moisture-proof, oil-proof, sterilized, and disinfected.