Anyway I have to warn you, you better make a very clear and easy to follow specification of the inductor or transformers you ordering to - drawings is essentials. They easily making mistakes on it.
That is very true. Don't assume they know what you are trying to communicate with them. Take pictures, drawings and provide as much detail as possible and more.
Over the years, I had quite a few interesting and frustrating experiences dealing with China. Once I ordered about 400 rubber duck BNC antennas. They provided all the specifications as well as plots of the antenna response. This was for use in the aviation band. When I received the shipment and checked the response on a network analyzer the antennas resonated in the commercial band around 163MHz. Luckily, I could prove my point with the factory by showing them the plots of a working antenna against the one they supplied. At the end, they replaced the order and told me to keep the faulty batch. Apparently, it is too expensive to import things back into China. I offered to pay 50% of the return shipping cost, and they still refused. They said the return import taxes was too expensive.