Please be careful with the Chinese centrifuges folks. They have been the cause of a few fires according to some industry folks I know. 1 for sure in Washington that caused an investigation into the equipment and sellers.
Our centrifuges aren’t cheap (neither are lambos 
) but I have seen LOTS of used deltas around for not that expensive.
Please do yourself a favor and save money on less essential equipment. Buy a spd instead of a wiper, buy a roto instead of a FFE but for the love of god get a safely made centrifuge.