Release date : 2016/10/14 17:05:28

At present, the general cabling system of large and medium-sized networks is generally carried out by means of bidding, which raises the question of how to evaluate the cabling system scheme and how to choose the final scheme among many schemes. We express our own opinions on the above issues, which are only for users' reference.

1. Option to be selected through tender

Integrated wiring is the basic project of the nervous system in large buildings. Generally speaking, it should be guaranteed to provide a service period of at least 15 to 25 years. During the guarantee period, no matter how much progress and development there is in science and technology, the integrated wiring Neither infrastructure nor investment will be eliminated. Therefore, users of integrated wiring projects of large and medium-sized networks should pay full attention. In view of the mixed quality of the current integrated wiring market and the complex and diverse products, it should be solved through bidding. The bidding unit proposes its own network integrated wiring scheme according to the bidding document, and then selects the best scheme from a batch of schemes.

2. Selection of bidders

When the network construction unit is bidding, it is necessary to avoid the default contracting unit as much as possible, and should comprehensively measure the technical level, economic strength and backup guarantee ability of the bidding unit. At present, there are many large and small companies in the domestic integrated wiring market, there are strong and weak, and they are very different in economic strength, technical level and management level. The phenomenon of "setters" must be avoided in the bidding process, so as to prevent the real construction unit from getting into the hands. Due to insufficient funds, it can only obtain profits by means of low-cost raw materials and simplified technological processes. The quality of the project cannot be guaranteed, and it will bring infinite benefits. future trouble.

3. choice of price

As far as the network integrated wiring system engineering is concerned, users all want the most economical investment and the fastest construction period, so as to gain high praise from investors and higher-level units. Blindly bargaining, or choosing the lowest bidder, is not necessarily wise. You must know that excessive bargaining and price reduction are achieved on the premise of sacrificing the quality of raw materials and at the expense of reducing construction procedures, and the construction unit will never make a loss-making transaction. Therefore, the tendering unit should grasp the scale of the project cost, choose a reasonable quotation, not the lowest quotation, and aim to achieve the best price/performance ratio. This is the best policy.

4. product model

Any project must involve product selection. The companies that offer the products in question always try their best to sell their products, saying that their products are of the best quality. However, those in charge of product selection must pay attention to the fact that products are divided into main components, secondary components, basic products, and high-tech products, and should fully understand the performance and technical indicators of the product.

Generally speaking, the wiring products of European and American countries are of excellent quality, but the price is high. In the case of strong capital, the choice of European and American products is undoubtedly a favorable factor for the assurance of project quality. However, it is also necessary to prevent "parallel imports", resulting in spending a lot of money, but buying fake things.

Relatively speaking, the prices of products in my country (including Taiwan, Hong Kong), South Korea and Singapore are relatively low, the quality is relatively stable, and there is no shortage of high-quality products, which are more in line with the Chinese market. However, fake and inferior products are also emerging in an endless stream in the market. For the price that is too low, we must pay special attention and be extra vigilant to avoid being fooled.

5. Choose the right technology

The technology of the integrated wiring system is constantly developing, and new technologies are constantly emerging. Which technology should I choose? Our view is:

(1) Select the applicable technology - determine the wiring technology according to the actual needs of the development stage of the enterprise network. Excessive technology usually also causes problems such as high cost, difficult maintenance, and difficult to buy spare parts.

(2) Choose mature and advanced technology - any technology has a development process. We recommend that ordinary users choose mature and advanced technology and avoid blindly pursuing the most advanced technology. Mature and advanced technology can provide both hardware and software technical support and assurance, and it is enough to meet the current needs of users. The most advanced technologies are often accompanied by some deficiencies. From the perspective of hardware, the products have not been tested for a long time and widely used, and have inherent deficiencies, and the parts are difficult to find. Once a failure occurs, it may cause large damage. Loss. From the point of view of software, the mastering and digesting of new technologies may require a process. Once there is a problem, no one may be able to solve it, or the solution of a small problem also requires a very complicated process and consumes a lot of time and energy. In short, except for users with strong technical funds such as scientific research, national defense, and higher education, who have real application needs, generally do not blindly pursue the most advanced technologies and products, and should master the advanced nature of technology moderately.

6. Choice of Network Cabling System Scheme

General bidding units will come up with their own wiring system solutions, emphasizing their own best. Among the many schemes, how to choose the scheme that best suits the needs of the bidder? In summary, we believe the following points should be noted:

(1) Does the function meet the current needs of the user unit?

(2) Is there room for development and expansion?

(3) Is the current investment still valid when the system is upgraded?

(4) Is the structure of the wiring system reasonable?

(5) Is the technology used in the wiring system advanced and mature?

(6) What is the quality of the selected devices? How's the price? How is the price/performance ratio?