First, the research object of commodity maintenance

Second, the task of commodity maintenance

Third, the role of commodity maintenance

Section 2 Commodity Classification

First, the basic principles of commodity division

Second, the method of commodity classification

Three. Commodity categories in international commodity classification

Section 3 Types of Changes in Commodity Quality

I. Physical and mechanical changes of commodities

Second, the chemical changes of commodities.

Three, the physiological and biochemical changes of commodities and other biological changes.

The fourth quarter, the influencing factors of commodity quality change

First, the internal factors affecting the change of commodity quality

Second, the external factors that affect the change of commodity quality

Review the first thinking question: the influence of air temperature and humidity on commodity quality.

First, the basic knowledge of air temperature and humidity

Second, the influence of air temperature and humidity on commodity quality

Section 2 Control and Adjustment of Temperature and Humidity in Warehouse

I. Sealing and ventilation

Second, moisture absorption and air conditioning regulation

Section 3 Temperature and Humidity Management of Cold Storage

A, the classification of cold storage

Second, the structure of the cold storage

Third, the warehouse management of cold storage

The fourth example of low temperature preservation technology for commodity preservation of water-saving products

First, cold storage and preservation technology

Second, cold seawater preservation technology

Thirdly, micro-freezing preservation technology.

Four, freezing preservation technology

Five, the quality control of frozen products in frozen storage

Review the concept and types of commodity packaging in the first section of thinking questions

Section 2 Commodity Packaging Technology

I. Packaging materials

Second, the packaging technology

Section 3 Marks and Barcodes of Commodity Packaging

First, packaging marks.

Second, packaging marks.

Three. Packaging marking and packaging marking requirements

Fourth, bar codes.

Five, RFID technology

The fourth quarter, the role of commodity packaging in commodity maintenance

First, the role of packaging materials in commodity maintenance

Second, the role of packaging technology in commodity maintenance

Section 5 Examples of Maintenance Technology Identify the Signs on the Outer Packaging of Commodities

Review the types and characteristics of perishable goods in the first section and think about the problem.

First, the types of perishable goods.

Second, the characteristics of perishable goods

The process and influencing factors of commodity mildew in the second quarter

First, the process of commodity mildew

Second, the main factors causing commodity mildew

Section 3 Prevention and Cure of Commodity Moldiness

First, strengthen the management of inventory goods.

Second, chemical mildew.

Third, gas phase mildew prevention and corrosion protection.

Fourth, modified atmosphere can prevent mildew.

Five, low temperature storage mildew

Six, dry mold rot

Seven, other methods to prevent mildew and rot.

Section 4 Examples of Soy Sauce Storage Technology Maintenance Technology

First, the reason of soy sauce mildew (white)

Second, the anti-mildew measures of soy sauce

Three, commonly used preservatives and their use methods

Four. Clarification, storage and packaging

Review the first thinking question: the storage performance and quality change of food.

First, the storage characteristics of food

Second, the quality change of food during storage.

Section 2 Storage Methods of Food

First, keep food at low temperature.

Second, the canning of food.

Three. Radiation preservation of food

Fourth, dry storage of food.

Verb (abbreviation for verb) chemical preservation of food

Six, food modified atmosphere preservation method

Seven, food preservation method under reduced pressure

Eight, food curing and smoking preservation technology

Nine, high-tech food preservation

Section 3 Storage, Transportation and Storage Management of Food

I. Food storage and transportation

Second, warehouse management in the process of food storage

Section 4 Example of Pear Storage and Maintenance Technology

First, the fresh-keeping characteristics

Second, harvesting and pretreatment.

Third, the storage method

Four, postharvest diseases and their prevention and control

Review the first thinking question: corrosion of metal objects.

First, the principle of metal corrosion

Second, atmospheric corrosion of metals.

Third, the characteristics of metal corrosion

In the second quarter, factors affecting metal corrosion

First, the internal factors affecting the corrosion of metal objects

Second, the external factors affecting the corrosion of metal objects

Section 3 Metal Rust Prevention

1. Reasonable selection of metal products materials

Second, the treatment of metal corrosion environment

Third, corrosion inhibitor protection.

Four. electrochemical protection

Five, metal surface treatment and painting

Six, the chemical transformation of metal surface

Section 4 Examples of Maintenance Technology Rustproof Technology and Rustproof Packaging of Mechanical Products

1. Anti-rust technology of machine tools and anti-rust packaging method

2. Bearing antirust technology and antirust packaging method

Review the internal causes of aging of polymer materials in the first section.

First, the internal causes of plastic aging

Second, the internal causes of rubber aging

Section 2 External Causes of Aging of Polymer Materials

I. Influence of atmospheric environmental factors and biological factors

Second, the influence of molding conditions

Third, the influence of mechanical stress on rubber aging

Section III Aging Resistance of Polymer Materials

First, improve the polymerization and post-treatment process.

Second, improve the molding and post-treatment process.

Third, modify

Fourth, personal protection.

5. Adding anti-aging agent

Section 4 Maintenance Technology Example PVC Anti-aging

First, hard products

Second, soft products.

Section 5 Maintenance Technology Example II Aging Resistance of Rubber Products

First, the principle of rubber anti-aging system selection

Two, several kinds of rubber anti-aging measures and their formulas

Review the common textile products in the first section of thinking problems

I. Textile fibers

Second, textiles.

Third, clothing.

Section 2 Quality changes of textiles during storage

1. Quality changes of textiles during storage

Second, the quality change of clothing during storage

Section 3 Maintenance Technology Examples Maintenance of Textile Commodities

First, the maintenance of woolen clothing

Second, the maintenance of cotton and cotton garments.

Third, the maintenance of linen clothes.

Four, cashmere sweater maintenance

Verb (abbreviation for verb) Maintenance of sweaters

Maintenance of silk clothing with intransitive verb

VII. Storage and Maintenance of Knitted Textiles

Eight, the maintenance of supermarket textile products

Nine, the maintenance of bedding

Review the common daily chemical products in the first section of thinking questions

I. Washing products

Second, cosmetics.

Third, disinfection supplies

Quality inspection of chemical commodities used in festivals in the second quarter

First, the quality inspection of washing products

Second, the quality inspection of cosmetics

Section 3 Maintenance of Daily Chemical Commodities

I. Maintenance and custody of washing products

Second, the custody of cosmetics

Section 4 Maintenance Skills Example Daily Maintenance of Cosmetics

Review the first section of thinking questions: commodity warehousing operation management.

I. Acceptance of warehousing business and warehousing contract

Second, the storage operation organization

Section 2 Cargo Handling Management

I. Loading and unloading methods

Second, the principle of rationalization of loading and unloading

Third, the design and organization of loading and unloading technology.

Section 3 Commodity Storage Business Management

A, commodity stacking management

Second, the commodity pad

Third, the management of goods in the warehouse

The fourth quarter commodity outbound operation management

First, the basis of goods out of the library

Second, the basic requirements of the goods out of the library

Third, the basic way of goods out of the library

Four, the basic procedures of goods out of the library

Verb (abbreviation of verb) circulation and accounting treatment of outbound documents

6. Problems when the goods leave the warehouse.

Review the classification and characteristics of dangerous chemicals in the first section of thinking questions

I. Concept of hazardous chemicals

Second, the signs of dangerous chemicals

Three. Classification of hazardous chemicals

Fourth, the characteristics of dangerous chemicals

Section 2 Safe Storage of Hazardous Chemicals

First, the harm of dangerous chemicals to human body

Two. Prevention and Control of Chemical Hazards in Workplace

Three. Matters needing attention in transporting dangerous chemicals

Four, all kinds of dangerous chemicals fire characteristics and fighting knowledge

Section 3 Examples of Maintenance Techniques Technical Conditions for Storage and Maintenance of Toxic Commodities

I. Storage conditions of toxic commodities

Second, the warehousing acceptance

Third, stacking

Fourth, the maintenance technology

Verb (abbreviation for verb) safe operation

Six, storage period

Seven, outbound

Eight, emergency handling

Review the causes of warehouse fire and explosion in the first section of thinking questions

I. Overview of fire and explosion

Second, the cause of the warehouse fire and explosion

Section 2 Safety Management of Fire Prevention and Explosion Prevention in Warehouse

A, warehouse fire and explosion safety education

Second, the warehouse fire and explosion safety technology

Three, warehouse fire and explosion safety management

Section 3 Fire Prevention and Explosion Prevention Measures and Equipment

First, fire and explosion prevention measures

Second, the fire and explosion-proof equipment

Third, fire and explosion cases

Review the first thinking question: rodent damage in warehouse and its prevention and control

First, the main rodents in the warehouse

Second, the living habits and hazards of rodents in warehouses

Third, the control of rodents in warehouses.

Section 2 Pests in Warehouse and Their Prevention and Control

First of all, common warehouse pests

Second, the control methods of warehouse pests

Three, warehouse pest control examples

The harm and prevention of warehouse ants in the third quarter

I. Characteristics and living habits of termites

Second, the main termite species in the warehouse

Third, the characteristics of termite damage

Fourth, the transmission route of termites

Verb (abbreviation of verb) termite control

Review thinking questions

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