"Had poblems with the hot-end fan in my 'Sainsmart Ender 3' 3D-printer. Contacted the support via email. They responded immediately, were very helpful and offered to provide a replacement fan.
The fan was shipped directly from the manufacturer via dhl express and was with me in a few days. Excellent customer Service. Thank you!"

"Ryan went above and beyond to take care of me."

"Quality and workmanship are outstanding. Assembly was quick and easy. Very first operation was flawless. Could not be happier, although now I wish I had purchased the 3018. My main motive was to get acquainted with CNC, but now I look forward to working on wood projects beyond the size limitations of the 1810."

"I received the wrong brackets and immediately emailed your support service and they're very helpful and taking care of the situation"

"Very unprofessional. Had to e-mail several times to find out about my order. They did not inform me that my order was shipped in to separate shipments and the wait time was horrible. Still haven't received part of my order. Will not buy anything from this company again."

"I purchased the 3d printer but it didn't have a power cord in the box - I contacted Sainsmart and they responded immediately and got my replacement part on the way - thank you!"

"Having ordered some resin on the !st of the month to my surprise it arrived on the 6th fantastic....service.....
Had a bit of trouble from DHL and import charges but contacted Sainsmart and very Kindly refunded me part of the import charges.
Have now started using the Resin and with a little bit of adjustment to the exposure timings from the normal resin I use the prints are great.
So all in all
Fantastic service and Fantastic product.
Will be ordering again"

"Bought a CNC-3018 Pro DIY kit and one year later the motherboard and power supply stopped working. They sent me new and updated revisions of the parts with express shipping free of charge. All communications were very good and straight forward, will definitely look into buying more from them in the future."

"Ordered the 3018 MX3 kit during a sale. Arrived quickly. Assembly was straightforward. Kit had a missing spring, but contacted customer service and they sent a new one right away. Very pleased with the kit and the service."

"On 31st December I ordered a cnc router engraver and paid, the website said 2 in Stock and free delivery.
A few days later I was told that they were out of stock in the European wear-house and they could send direct from China but I would have to pay 1/2 of the import fees and taxes. As Neither I or the seller did not know what that cost would be, I declined and I find my self waiting for the seller to re stock in Europe which will be over 2 months "

"Bought 2 items, saw that a little more would give me free shipping. Bought 2 rolls of filament to get the free shipping, the 2 items I wanted were out of stock and refunded. I cancelled the order, the two rolls of filament still shipped. Refused the filaments. Have not yet been refunded the rest of my purchase."

"I ordered a DIY CNC 3018Pro machine that came with a missing spring. I contacted customer service and they responded very quickly and got me the missing part within a week. A+ on support of their products from my experience (I even ordered through a reseller)

Thank you"

"Apparently they oversold the Oscilloscope kit, as they cancelled my order with said explanation. Disappointed but no harm done. Four stars for prompt refund, one star taken for not delivering"

"Ordered 3 weeks ago; but it did not leave China yet...
Now, almost a month and not shipped yet..."

"Hong was very responsive to my communication and followed up nicely."