Why you shouldn’t/can’t just buy a base off Alibaba 

Your are totally right. The warranty is a plus to me. I really appreciate to take your time to explain all those stuff. Thanks Chris!!!

Like everything else, with Amazon being an example, whereas there are numerous reputable & established manufacturers of industry certified lifting columns & control systems available on Alibaba that supply US contract furniture manufacturers, who all match the China supplier of your frames, just so long as knowledge & due diligence is applied!

At timestamp 1:40 you say the frames are US made, but sold from China? How does that work? What US company is making the frames? Thanks!

Do you ship to singapore?

So what your saying basically is try to get samples out of J-star not Jiecang China