"Non-standard" means "not made according to the standard". General products have their own production standards in order to be common with other products (this is for the convenience of use and maintenance). For example, the commonly used "screws" must be standard parts. You can buy screws of the same specification in any store, which are universal. "Standards" include national standards, local standards, industry standards and so on, which complement each other. "Non-standard" goods or spare parts refer to goods that are rarely used, or spare parts specially made for a certain kind of goods, and it is not easy to buy universal or substitutes.

The non-standard card adopts ABS shell or PCV, and the coil is filled with epoxy resin. They are joined together by ultrasonic welding and have different shapes. EM, MF, Temic, ATMEL, ST, TK series chips can be selected.

Nonstandard reference material