First of all, you need to research the company’s background. Identify how long has the company been operating.
it is important that the company provides you a good website interface and classy look so you can at least judge how much the business has invested in its advertisement.
Knowing the contact numbers and the physical address of the company is essential.
There are companies that also provide examples of research papers so you better check out the quality of their samples.
Looking for some feedback from previous customers is a must. This way, you can get an unbiased opinion about the service the company renders to the clients.