What does the copper national standard non standard mean? What does the national standard mean by no

The copper national standard is the copper wire produced in accordance with the national standard, and the non-standard is the company's own internal production and manufacturing, not according to the national standard. Here's how to distinguish it:

It can be distinguished by the caliper, copper core color, weight, and skin color.

Certificates; See whether the certificate is standardized; See whether there is the factory name, factory address, inspection seal, and production date; See if there are trademarks, specifications, voltages, etc. printed on the wires. It is also necessary to look at the cross-section of the copper core of the wire, and the high-grade copper.

The color is bright and soft, and the copper core is yellow and reddish, indicating that the copper used is of good quality, while the yellow and white are a reflection of low-quality copper.

2) You can take a wire head and bend it repeatedly by hand, where it feels soft, has good fatigue strength, has a large elasticity of plastic or rubber and is insulator of the wire.

If there is no crack on it, it is a superior product. The outer plastic skin of the wire should be bright in color and fine in texture, and there should be no open flame when lit with a lighter.

3) Intercept a section of the insulation layer to see if its core is located in the middle of the insulation layer. Not centered is due to the process is not high caused by the core phenomenon, in the use of small power can also be peaceful, once the power consumption, the thinner side is likely to be broken down by the current.

4) Be sure to see if the length and core thickness have been done. In the relevant standards, it is stipulated that the error of the length of the wire cannot exceed 5%, and the cross-section wire diameter cannot be exceeded, but there are a large number of short catties in the length and fraud on the cross-section (such as indicating that the cross-section is a square millimeter.

The line is actually only 2 square millimeters thick).

It was revealed that the reason for the huge difference in wires is due to the different raw materials used in the production process. The main raw materials for the production of wires are electrolytic copper and insulating materials.

and sheath material. At present, the electrolytic copper in the raw material market is about 20,000 yuan per ton, while the first miscellaneous copper is only about 10,000 yuan per ton; High-quality products of insulating materials and sheath materials** are 8000 yuan and 8500 yuan per ton, and defective products.

The ** per ton is only 4,000 yuan and 5,000 yuan, and the price difference is even greater.

In addition, the insufficient length and insufficient glue content of the insulator are also important reasons for the difference. The length of each coil is 100 meters for the excellent product, and only about 90 meters for the defective product; The insulator has excellent adhesive content of 35% to 40%, while the defective product is only 15%. Through comparison, it is not difficult for consumers to see that the difference in the sales of finished wires is caused by the existence of greasy materials.

It refers to the national standard for copper, the national standard is the standard material content and size of the standard, and the non-standard is the content and size of the material that is customized or different from the national standard.

The national standard is a brand that meets the requirements and verification of international quality standards. Don't say much about non-standard.

The annual report is non-standard, which generally means that there is a problem with the listed company's ability to continue operations. Enterprises that have been non-standard for three consecutive years should attract the attention of investors. These continuous non-standard enterprises are far lower than other normal listed companies in terms of operating performance and the performance of the rise and fall of the secondary market.

If a non-standard opinion is issued in the annual report of a listed company, there will be a series of chain consequences, and refinancing may be blocked. According to the provisions of the Administrative Measures for the Issuance of Listed Companies, if the financial statements of a listed company in the last three years and the latest period are issued by a certified public accountant with a qualified opinion, a negative opinion or an audit report that cannot express an opinion, it will lose the qualification for public additional issuance, allotment of shares and issuance of convertible bonds.

It can be seen that once a listed company's financial statements are issued with a non-standard opinion, its ability to refinance (except for private placement) will cease to exist for at least three years. This will definitely have a greater impact on the healthy and rapid development of listed companies, and investors should have a full estimate of this.

Summary. Hello, the difference between national standard copper and non-standard copper can be distinguished from calipers, copper core color, weight, and skin color.

Hello, the difference between national standard copper and non-standard copper can be distinguished from calipers, copper core color, weight, and skin color.

1) The first leakage difference is to see whether there is the "Great Wall Mark" and production license number of the China Electrical Products Certification Committee on the wire packaging plate; See if there is a quality system certification; See whether the certificate is standardized; See if there is a factory name, factory address, inspection chapter Li Zai, production date; See if there are trademarks, specifications, voltages, etc. printed on the wires. Also look at the cross-section of the copper core of the wire, the color of the high-grade copper is bright, the color is soft, and the copper core is yellow and red, indicating that the quality of the copper used is better, and the white in the yellow is a reflection of the low-quality copper.

2) You can take a wire head and bend it repeatedly by hand, which is sold as an excellent product if it feels soft and soft, has good fatigue strength, has a large elasticity of plastic or rubber feel and has no cracks on the wire insulator. The outer plastic layer of the wire should be bright in color and fine in texture, and there should be no open flame when lit with a lighter.

3) Intercept a section of the edge layer of the empty water to see if the core is located in the middle of the insulating layer. Not centered is due to the process is not high caused by the core phenomenon, in the use of bucket or if the power is small can also be peaceful, once the power consumption is large, the thinner side is likely to be broken down by the current.

4) Be sure to see if the length and core thickness have been done. In the relevant standards, it is stipulated that the error of the length of the wire cannot exceed 5%, and the diameter of the cross-section grinding wire cannot be exceeded, but there are a large number of short catties in the length and fraud in the cross-section (such as the lead content of the line with a square millimeter of cross-section, but in fact it is only 2 square millimeters thick).

Kiss to make a reference, oh, the above is the difference between national standard copper and non-standard copper.

Do you need to describe your hidden closure problem more specifically, if my is helpful to you, I hope you can give me a full praise and encouragement

I would like to consult: what is the difference between national standard electrolytic copper and non-standard, and how much is the gap?

Length Material **All different i

The national standard electrolytic copper** is also much higher than the non-standard.

The national standard electrolytic copper ** is 10,000 yuan per ton.

And the non-standard ** is 10,000 yuan per ton.

Make a reference.

Do you need to describe your hidden closure problem more specifically, if my is helpful to you, I hope you can give me a full praise and encouragement

Legal analysis: non-standard means: non-standard, there is no national standard and industry standard to rely on.

Legal basis: Civil Procedure Law of the People's Republic of China

Article 76: Parties may apply to the people's court for an evaluation on specialized issues of ascertaining facts. Where the parties apply for an appraisal, the parties are to negotiate to determine a qualified evaluator; and where negotiation fails, the people's court is to appoint one. Where the parties have not applied for an evaluation, and the people's court finds that an evaluation is necessary for a specialized issue, it shall retain a qualified evaluator to conduct the evaluation.

Article 77: Evaluators have the right to learn about the case materials needed to conduct evaluations, and when necessary, may question parties and witnesses. The evaluator shall submit a written evaluation opinion and sign or affix a seal to the appraisal document.

Article 78: Where parties have objections to an evaluation opinion or the people's court finds that it is necessary for an evaluator to appear in court, the evaluator shall appear in court to testify. Where upon notice from the people's court, the evaluator refuses to appear in court to testify, the evaluation opinion must not be the basis for determining the facts; The party who paid the appraisal fee may request a refund of the appraisal fee.

Article 79: Parties may apply to the people's court to notify persons with specialized knowledge to appear in court and submit opinions on evaluation opinions or professional issues made by evaluators.

Article 80: In the inquest of physical evidence or at the scene, the inquest person must present the people's court's identification, and invite the local basic-level organization or the party's unit to send someone to participate. The parties or their adult family members shall be present, and where they refuse to appear, it does not impact the conduct of the inquest. Relevant units and individuals have the obligation to protect the scene and assist in the inquest work on the basis of the notice of the people's court.

The inquest personnel shall make a record of the circumstances and results of the inquest, and the inquest personnel, the parties, and the invited participants shall sign or affix a seal.

The national standard wire is the wire that is produced in full accordance with the national standard. Generally, household and common wires are standard specifications and performance, and the national standard stipulates five common specifications and performance. Measurements:

1. Appearance standards, there must be certification marks, manufacturers, wire diameters, etc. on the wire, yellow-green insulation layer for ground wire 2, mechanical strength 3, insulation (generally greater than 100m) and voltage strength of the sheath (1500V below 500V) 4, line resistance (no greater than a certain resistance under a certain wire diameter, conductivity, length) 5, under the high temperature impact of 150 degrees, the wire shall not crack at low temperature -30 degrees, etc. The distinction between national standard and non-national standard The excellent product of the national standard line is 100 meters of volume, and some of the non-standard lines are only 60-75 meters Volume 1, depending on whether there is a quality system certification; See whether the certificate is standardized; See whether there is the factory name, factory address, inspection seal, and production date; See if there are trademarks, specifications, voltages, etc. printed on the wires. It is also necessary to look at the cross-section of the copper core of the wire, the color of the high-grade copper is bright and the color is soft, otherwise it is a defective product.

2. To try to take a wire head and bend it repeatedly by hand, where it feels soft, has good fatigue strength, plastic or rubber feels elastic and has no cracks on the wire insulator is an excellent product. 3. The wire weighing *** is generally within the specified weight range. For example, the commonly used plastic insulated single-strand copper core wire with a cross-sectional area of 1 5 mm2 weighs kg per 100 m; 2 5 mm2 plastic insulated single-strand copper core wire weighing 3 kg per 100 m; 4 0 mm2 plastic insulated single-strand copper core wire, weighing kg per 100 m, etc.

Poor quality wires are not of sufficient weight, either not long enough, or there are too many impurities in the copper core of the wire. 4. Look at the copper quality The copper core of the qualified copper core wire should be purple red, shiny, and soft to the touch. The fake and inferior copper core wire copper core is purple-black, yellowish or white, with many impurities, poor mechanical strength, poor toughness, and will break with a little force, and there is often a broken wire in the wire.

When inspecting, you only need to peel off one end of the wire 2 cm, and then use a piece of white paper to rub it slightly on the copper core, if there is a black substance on the white paper, it means that there are more impurities in the copper core. In addition, the insulation layer of shoddy wires may seem to be very thick, but in fact most of them are made of recycled plastic, and over time, the insulation layer will deteriorate and leak. 5. Look** Due to the low production cost of counterfeit and shoddy wires, vendors often sell them at low prices under the guise of low prices and good quality when they sell, so that people are deceived.

Non-standard is non-standard, and there is no national Zen oak standard and industry standard to rely on.

1. Standard parts are parts that have the requirements of national standards and industry standards, and there are general parts on the market, which can be bought back on the market and can be exchanged.

2. Now manufacturing enterprises are doing non-standard design, and the standard parts are stereotyped, what else is designed, but everything is changing, and the design principles such as mechanical principles are the same, but it is just a combination of some standard parts and non-standard parts.