The first step is pulping. If you use trees and grass to make paper, you must first chop the trees and grass, then steam it in a large pot until it is rotten, and then put the steamed liquid (professional called pulp) out of the pot.

Papermaking is an important invention of ancient Chinese working people. There are two forms: mechanism and manual.

Non-ionic type: alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, fatty alcohol cycloethyl cyclopropyl block copolymer

Since the 1950s, seawater desalination technology has become one of the important ways to develop new water sources.

If you really live in the wilderness, then: water is definitely the biggest factor in determining how long you can live. Not only must there be water but also clean and sterile fresh water.

Germicides, also known as biocides, fungicide, bactericidal algaecides, microbicides, etc., usually refer to chemical agents that can effectively control or kill microorganisms in the water system-bacteria, fungi and algae. Mainly divided into two kinds of agricultural fungicides and industrial fung......