I came across this brand of electric trike as the result of the owner of the company requesting to join the Facebook Tadpole Rider Group.
Unfortunately their website does not offer English. However, the Google Chrome browser will translate it. I don’t normally use Google nor do I recommend it as they are just too big for their britches and are up to no good with all their power and money.
To the best of my understanding Dekers presently produces 3 models and they custom build trikes to meet their customer’s personal needs. They cater to those with disabilities.