pvc membership card | transparent pvc membership card | Beijing Orient million cards offered by Orient million cards. Beijing Orient one hundred million Smart Card Technology Co., Ltd. (www.dfykzk.com) is Beijing Daxing District Quality Business League certification company, has Rita card Oriental one hundred million cards and other brands, has a good reputation, honesty, service-oriented, click on the page "Business League Support" icon on, we will be happy to serve you! Beijing contactless IC card production factory, production of IC card companies, a common store contactless IC card SEL model: SEL4428/4442 capacities are: 1K/256B, all data except the password, can be read in any case, The password can be read out after the check correctly. All data can be write-protected byte data write-protected after curing, can not be changed under any circumstances. Password error counter check the error once, then subtract 1. If the counter value is 0, then the entire card data is locked, just read out, can not write and can not continue to check or change the password; is not 0, you only need to check the correct time, the counter will be restored to their initial values . SEL4428IC card password error counter initial value of 8, SEL4442 3. Temperature range: -35 ℃ -80 ℃, at least 100,000 erase, at least 10 years data retention. SLE4428 card data without a password can read the entire card printing pvc membership card, so pay attention to the design of content encryption, to prevent vandals identification data format. The whole card is not partitioned, the password has been able to verify the correct address to write or modify any of the data, so the design should pay attention to proper curing of data and the data content encryption, to prevent unintentional destruction of data or unauthorized alteration of data. After checking the correct password, which can be read out. Therefore, the design of the program to be able to prevent vandals using illegal interrupt program run, go directly to read the password method to steal passwords. What is a high-quality card, the definition of high-quality card system? High-quality card, refers to the high-end equipment and high-end technology, using imported PVC material focused emphasis on quality card production methods, relatively high-quality card production out of PVC cards, also known as high-quality cards, high-end cards or high-grade card. Relatively high-quality card production out of high-end cards, high-quality cards, high-end cards, not to focus on quality and price with high volume and low cost PVC material focusing on the use of inexpensive ways to card card material called low-end system card. High quality fabrication plant is generally large, integrated manufacturers, mainly in the coastal areas of our country; low-end card is generally small and medium sized manufacturers pvc card membership card, distributed in various provinces and cities of our country. Advantages and disadvantages of a high-quality and low-end card card analysis: First, transparent pvc membership cards, high quality card is excellent quality for the purpose of producing PVC card, use a good quality card printing equipment, mostly imported equipment, technology is operated by a professional card and technical personnel, such technicians mostly have 10 years of experience. Therefore, the necessary human and material resources than the average cost of a lot of card manufacturers. And the material used determines the basis for PVC cards: Use of high-grade PVC material produced Kaji smooth and delicate texture, feel good, easy to break. The low-end card is the pursuit of the lowest cost price, the use of low domestic PVC material as kaki, while using a low-end fabrication equipment and non-professional production techniques, such production out of PVC cards feel rough and prone to cracking, break phenomenon. Small card manufacturers received orders because of low prices, in addition to quality pvc membership card, can not give guarantee period, delivery, after-sales service, etc., over time causing bad reputation nausea cycle, and large, high-quality card manufacturers reputation from the customer's commitment to security, after sales service and so on, so according to their own needs, must not covet cheap low-end card on the choice of small and medium sized card manufacturers or middlemen used, it should first consult regular large-scale high-quality card manufacturer's schedule commitments and details of their needs comprehensive factors work product issues, quotes, etc. make a decision.