Recently a new customer came to us and asked if our item can work with their lib/codes. This customers has been in touch with us for a long time but never made an order. It cought our attention why they changed their mind this time.
Here is the story, they bought the similar items from other suppliers becuaes the prices are more competitive. when they received the goods, they found the products couldn't not work with their codes, when they reach for help, they were told that there were no technical support, they can return the goods and get the replaced, but there is no guaranty the new batch can work with their lib. in other words, returning the goods doesn't fix to problem, and the costs is high. eventually this customer bear with the loss and repurchase from other supplier, that's us - best arduino - exportise internationl.
* 客户提出购买的产品，市场上同型号的有几个选择
* 客人自己在别处买了，外观一样的，发现不能用，找原来的卖家，没办法解决
* 找我们买，并提出要兼容某lib
* 我们出货前逐一测试，发现意外？
* 经过挑选，提供符合要求的产品 happy ending
