Prior to the acquisition of this machine, we did our sealing--slowly-- by hand. Very unsatisfactory. I saw this machine in operation in WuHan in October of 2019 at a factory where we do business, and remembered it. Six months later I had them send me the make/model information, and send me a video of the device in operation. The most difficult thing was to get a clear answer as to whether this would work for the kind of packaging we were using. I never did get an answer from anyone-- not from the manufacturer, not from the people who supplied our packaging --no one knew. Fine, I thought it would work, bought it, and boom. Step up was instant. We've been using ours more than half a year without a hitch. it came with the relevant spare parts, none of which we've needed so far. It's much faster than the other system we used.I find it hilarious how Chinese this machine is (in design). Some (many?) wouldn't notice, but we've spent many years in China, and this machine, it is clear to us, is a product of Chinese design. Anyone who thinks industrial equipment is the same everywhere just hasn't experienced the differences. German engineers, trying to accomplish the same task, would come up with an entirely different system. Maybe better, maybe not, but assuredly 1) more complicated and 2) more expensive. That's not a dis-- we like our German stuff. And it's not a dis to this machine-- this is a dirt-simple task, and does not require anything more complicated or more expensive. We're very pleased with this machine, and I have plans, when travel is possible again, to visit the factory where this was made to talk to the people who designed and made it, just for fun, and because I can.I would not recommend this to any outfit that doesn't have at least one person with a decent mechanical aptitude. Making adjustments might not be as clear to people who don't understand machinery. To people who do, the design of this will appeal. One motor (very well designed motor) runs everything. It's very efficient.And again, it works **really** well. Last year we had record sales, and this year, sales are up even more (so far) so I expect we'll use it even more. It's likely that we'll need to add another to our production area in the next year or two and we'll be looking at another of the same.