1 thought on “wholesale jewelry necklace boxes What are the material classification?”
Claudia
wholesale steel navel jewelry The material can be divided into: inventory material; in the material; the material; the processing material; the processing material. The materials can be divided into: production materials; special engineering materials. The material is material, but not all substances can be called material. Such as fuel and chemical raw materials, industrial chemicals, food and drugs, are generally not material. However, this definition is not so strict, such as explosives and solid rocket pushing agents, which are generally called "capable materials" because it belongs to the component of artillery or rocket. Due to various diverse, there is no unified standard for classification methods. From physical chemical attributes, it can be divided into composite materials composed of metal materials, inorganic non -metal materials, organic polymer materials and different types of materials. The main point of selecting materials: Whether it can withstand the changes in the environmental overflow, the impact of the sun, and the change of the load during use. Whether the product is in line with sanitary standards and safety. The curved strength, stretching strength, impact strength, electrical insulation, arcability, fire resistance, water resistance, oil resistance, electrical properties meet national standards, solvents resistance and other mechanical mechanical properties and corporate standards. What are the size of size stability, optical properties, antiddy and antibacterial properties. Whether the appearance and economic costs and special requirements can meet the requirements.
wholesale steel navel jewelry The material can be divided into: inventory material; in the material; the material; the processing material; the processing material.
The materials can be divided into: production materials; special engineering materials.
The material is material, but not all substances can be called material. Such as fuel and chemical raw materials, industrial chemicals, food and drugs, are generally not material. However, this definition is not so strict, such as explosives and solid rocket pushing agents, which are generally called "capable materials" because it belongs to the component of artillery or rocket.
Due to various diverse, there is no unified standard for classification methods. From physical chemical attributes, it can be divided into composite materials composed of metal materials, inorganic non -metal materials, organic polymer materials and different types of materials.
The main point of selecting materials: Whether it can withstand the changes in the environmental overflow, the impact of the sun, and the change of the load during use. Whether the product is in line with sanitary standards and safety.
The curved strength, stretching strength, impact strength, electrical insulation, arcability, fire resistance, water resistance, oil resistance, electrical properties meet national standards, solvents resistance and other mechanical mechanical properties and corporate standards. What are the size of size stability, optical properties, antiddy and antibacterial properties. Whether the appearance and economic costs and special requirements can meet the requirements.