Sainsmart's technical support helped me… Sainsmart's technical support helped me out big time, replacement of material under warranty and instructions on how to restart the milling machine.

Excellent Very good, fast delivery time, the products are very well packaged. The products are very robust and work perfectly. Great at SainSmart, keep it up like that.

Sainsmart puts the pro in 4040 pro! The inside of the USB port on my 4040 pro broke loose and came out. Sainsmart sent me a new board. When I put the new board in it was defective. Sainsmart rushed me a board and everything is great! Sainsmart is hands down one of the best companies out there. I will look to see if Sainsmart carries an item before I purchase elsewhere. Sammy and the customer service team are amazing! They absolutely stand by their products and care about their customers! Thank you Sainsmart for all the amazing work you do!

High quality Sainsmart makes high quality CNC machines for a variety of applications and their customer service is friendly and timely.

Great products I ordered from that side since the products have great price/quality ratio. everythink went well, fast delivery and products are as they where described. Support helped promptly at one occasion.