The real import card reader, the technology is more mature, the product's repair rate is low, the design is beautiful and attractive. The disadvantages are: the product is expensive, the service does not have a domestic card reader in time, and must use the imported brand's imported proximity card, import The proximity card is also more expensive. Unless the customer specifies the use of an imported brand reader, I recommend using a domestic reader, but we must choose a card reader provided by domestic manufacturers with good reputation and service. Domestic card reader The appearance of these two years also has made great progress, and it will soon follow international popular styles. The imported card reader is 6-10 times of the price of domestic card readers, and the imported card price is 10-20 times that of domestic cards. The core chips of readers and cards are all processed by foreign RF chips. The country still does not have the ability to develop and produce chips in this area. Imported card readers are recommended to use type card readers and card readers. Cost-effectiveness will be better. Many domestic readers casually paste a brand that does not exist in foreign countries, mark a place of a certain country, or there is a false proof of origin, this kind of hanging sheep to buy dog ​​meat a lot of things, Contractors should pay attention. Do not spent odds, not buy good products, attracted a lot of trouble.
Note two: Is it an ID card reader or an IC card reader?
ID card reader is a common name for read-only non-contact IC card. IC card reader is a collective name for readable and writable non-contact IC card. The performance cost ratio and sensing distance of ID card and ID card reader are better than that of IC. Cards and IC card readers. If it is only used for access control and attendance or parking card, it is recommended to use ID card reader and proximity card.. If you need to be compatible with non-fixed consumer card, you can only use IC card reader and sensor. Card. ID card market is popular and cost-effective is the EM card.
Note III: Do not just from the appearance of the reader to judge the quality of domestic <br> <br> domestic reader they use a common mold, or the mold shape copying foreign reader is everybody generic, anyone can buy. Into the shell, so even if the same type of card reader may be produced from different manufacturers, service and quality are not the same. The project must have a detailed understanding of the reader, not only from the appearance and price to distinguish It is recommended that the project purchaser purchases the card reader from the place where the access controller is purchased. Generally, the access controller manufacturer will either sell or produce a card reader that is similar to its quality standard. How do you judge the quality of a card reader? Some domestic readers use analog circuits instead of radio base station chips in pursuit of low production costs. Such readers have large currents, are prone to crashes or are damaged, and are not recommended. It is recommended that readers using imported RF base station chips be selected. Better, of course, but also from the time and repair rate of the manufacturer’s card reader that you have purchased for more than half a year, as well as the manufacturer’s quality standards and reputation. Judgment. In addition, the reader is a long-term use of equipment, circuit design must have a circuit to prevent death, this point is to pay attention. Note four: is the choice of sealing or non-plastic The reader is recommended to use an unsealed card reader. The reason is that even if the glue is sealed, the buzzer is still exposed. The water inlet will damage the card reader. The sealing material is resin. In general, the domestic use of manual sealant Curing Agent mixed uneven, the domestic resin material is cheap but the quality is not good, after a long time use will have conductivity, making the reader operation confusion or crashes, imported resin is expensive Domestic manufacturers generally Do not want to use, evenly allocated to each reader to cost more than ten pieces. In addition, the sealant is not suitable for equipment cooling, the performance of the reader is also affected. Therefore, unless there is no need to use special circumstances Sealing the reader. Special occasions on the reader for some waterproof protection on it.
Ningbo Actmix supply the high-quality of rubber accelerators, including:
Thiazoles accelerators, MBT, ZMBT, MBTS - Semi-ultra accelerator for the vulcanization of natural and synthetic rubbers; moderate curing speed.
Sulfenamide Accelerators, TBBS, CBS, DCBS, MBS - Basic accelerator for sulfur-cured diene rubbers, such as EPDM, NR, BR, SBR, especially for application in tires and anti-vibration elements.
Thiuram Accelerators, DPTT, TETD, TMTD, TMTM, TBzTD, TBTD, TBTD/S - Ultra accelerator for the vulcanization of natural and synthetic rubbers, and curing agent for sulfur-less or lower-sulfur vulcanization; most rapid cure among thiurams, sulfur donor, also suitable for CSM in combination with MBTS.
Guanidine accelerators, DPG, DOTG - Accelerator for the vulcanization of natural and synthetic rubbers, particularly used as a co-accelerator with sulfenamides for tire tread compounds and in silica compounds.
Thiourea accelerators, ETU, DETU, MTT -Accelerator for rapid vulcanization of chloroprene rubber and other diene rubbers, particularly
CR, EPDM, ECO and CM.
Amine accelerators , HMT(HEXA, H30) - Co-accelerator and methylene donor for resorcinol based compounds for hardening or steel
cord adhesion.
Dithiocarbamate Salts Accelerator, ZDMC, ZDEC, ZDBC, ZEPC, ZBEC, TDEC, CuMDC -Ultra accelerator for the vulcanization of natural and
synthetic rubbers, esp. for EPDM continuous vulcanization.
Zinc dialkyldithio phosphate, ZDTP/S, ZBOP/S, ZDT/S, ZBPD/S, TP/S -Special Rubber Accelerator for EPDM and other diene rubber,
do not contain can form harmful nitrosamine secondary amine.
Specialty Rubber Accelerator & Non-nitrosamines Accelerator
Rubber Accelerator TMTD, Specialty Rubber Accelerator, Rubber Accelerator, Non-nitrosamines Accelerator
Ningbo Actmix Rubber Chemicals Co.,Ltd. (Ningbo Actmix Polymer Co.,Ltd.) , http://www.actmix-chemicals.com