The boards that the link points to are not Mini Maple clones. They are known as "blue pill" stm32 boards. They are similar to mini maple but not quite the same. They can also be found on Aliexpress for as cheap as $2 US. Like the Maple, they can be programmed with the Arduino IDE once you configure it properly with the files you download from the website mentioned below. They can also be programmed with the standard STM toolset if you are so inclined.
For using them in the Arduino environment, everything you ever wanted to know about them and more can be found on Roger Clarke's excellent site here: stm32dunio
FWIW, the stm32duino website grew out of a thread on this forum that grew to 175+ pages!
Original STM32 thread