Shzond 30 MPA 4500 psi high pressure compressor

Yes, its a Yong Heng but its seems that its an older version because the intake filter is plastic. Mine is metal. For budget compressors of this kind, I will only buy Yong Heng or Tuxing from their online shop. Yong Heng has got one on Aliexpress . Not sure about Tuxing. The reason is that you can be sure that you will be able to get compatible spare parts in the future. For Yong Heng, make sure that you will get one equipped with the new-version first-stage piston which has a thicker top. You cant tell from outside. Ask the seller to confirm. 

https://www.airgunnation.com/topic/yong-heng-piston-cracking-no-more-hopefully/