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!

Best customer support Best customer support! Extremely helpful, and fast. Recently purchased a Genmitsu 3020 Pro Max V2 and the machine so far has been beyond expectations. I also recently got the RFL10W laser module for this machine. When I ran into problems, I reached out to Sainsmart support. Huge shout out to Sammy for being on the spot in helping to diagnose and correct the problem! The support is invaluable in learning CNC/Laser. I will most definitely continue to buy direct from Sainsmart, as well as recommend their products to anyone wishing to get started in this craft. Quality products, and people that stand behind them after the sale. Mark

Damaged ER11 collet from set Company replaced the damaged item quickly and without issue with an entire upgraded ER11 collet set.

I received the laser LC/40 I received the laser, I tested it. Now everything is ok. It works perfectly. Thank you for the professionalism you have shown. 5 star technical support team. I recommend with confidence.

A happy customer in Spain. Great service and good communication. Customs fees included in the price of the item to avoid problems. A happy customer in Spain. ⭐⭐⭐⭐⭐