Bulk buying of JK_BMS and Accessories?

[zedconnor]

I am a local diy battery reseller and looking to buy many JKBMSes from Alibaba.
There are alot of them companies selling JK Bmses and it has been difficult finding the real manufacturer.
What is your experience with this?

Is buying directly from the manufacturer better or are broker companies a better choice when it comes to errors and returns.