Welcome to SaleHoo! :) As a supplier, sw-box.com seems to satisfy some of the requirements we look for in a company to be considered reliable - more than 2 years existence online, and can accept safe payment methods such as Paypal.
HOWEVER, I can see that the products listed in their site carry Apple's logo. Please be cautious about importing fake Apple products, even accessories, from China, because you will most likely encounter great problems at the Custom. I have been searching for the post where a member just shared this experience. I will add the link here once found.
My advice for you is not to buy from this supplier, especially when you are going to import them in bulk.
Aside from sourcing Apple accessories directly from Apple Inc., here's a list of suppliers from our directory that offer these products - Link hidden: Login to view
You need to find the Wholesale section on these supplier's websites and either fill out an application form or contact them directly to get wholesale prices.
Let us know if you need further help.