Complete picture collection of three-proof handwritten newspaper

The "three defenses" refer to three preventions and protections. In the electronics industry, the "three defenses" generally refer to "anti-mold, anti-moisture, and anti-salt spray" for electronic products. In a broad sense, surface treatment is performed on products to reduce or eliminate the adverse effects of complex environments on the performance of electronic devices. The process in which manufacturers of electronic products apply conformal paint on circuit boards after production and debugging is completed is called "three-proofing".

In agriculture, the three defenses refer to "drought prevention, waterlogging prevention, and wind protection"; in industry, the three defenses refer to "antifreeze, anti-skid, and poisoning prevention"; in the construction industry, they are waterproof, fireproof, and earthquakeproof.

In terms of "creating health", the three defenses have two concepts: the three defenses for imported food refer to "anti-flies, anti-dust and anti-pollution"; Anti-fly and anti-mosquito”.

Use of three major equipment

Personal protective equipment mainly includes respiratory protective equipment, skin protective equipment, protective boxes and a full range of hand and foot protection.

1. Respiratory protective equipment

Respiratory protective equipment mainly includes gas masks and protective masks. Gas masks are used to protect people's respiratory organs, eyes and face from poisons, biological warfare agents and radioactive substances. Protective masks can be used without a gas mask or with a replacement gas mask. When using protective masks, processing such as alkali dipping or loading is required.

2. Skin protective equipment

Skin protective equipment mainly includes anti-virus gloves and anti-virus clothing. Gas gloves are made of rubber cloth and are used to protect a person's hands from toxic, radioactive and biological warfare agents. Anti-virus clothing is a kind of full-body skin protection equipment that consists of a top, trousers and boot covers. In addition, anti-virus cloaks and anti-virus boot covers can also be used to protect the skin.

3. Protective box

The protective box is a kind of personal protective equipment, which contains a phosphorus-resolving needle, a tube of skin disinfectant, and a tube of new anti-phosphorus tablets. , three bottles of phosphorus-removing nasal powder.