Printing on t-shirts to sell

Assalaamu Alaikum,

I am about to start a new business i.e. t-shirt printing business. I will be buying plain t-shirts at wholesale price (from china) and printing variable designs on it. I will be contacting schools, colleges, hospitals, event managers, sports managers, protesters, local sports teams, hotels, small business owners, etc. But, my questions are:

Is it permissible to do t-shirt business?