A quick test to see if the company needs more investigation is to look through the photos and compare what's in the background. If they all have different backgrounds - different buildings, factories, domestic buildings, stock yards and fields there's something that needs checking up.
The scammer has a dilemma. If he uses only photos from one company it is much easier to spot where the photos have been taken from but, if he uses a selection of photos from all over the internet, it doesn't look right.
In either case it doesn't take long to uncover the scammer. The scammer has also made other mistakes and particularly with regard to being very sparse with information about payment, finance, VAT, transport and lack of their company registration details. Buying a large piece of machinery is not like buying a bag of crisps and often the sellers, if they are a large company, will make as much if not more, from finance deals. They would always show the options on their website.
CAR ADVERTS - If a car seller mentions escrow - he's scamming you Never ever for any reason pay anything until you have seen and inspected the vehicle