Online Shopping Cart

I need an online shopping cart that will have the below features: 1) Company subscription process should be put in place, duration of the subscription should be checked. The list of subscribed companies should be automatically be categorized according to sector. This means that company must specify sector during subscription. Confirmation of company's subscription should be confirmed and ### --- message sent to email address provided (optional) 2) Company profile maintenance 2) Company's products / services Listing / descriptions (text and(or) pictures) 3) Details of individual product / service 4) Options to order individual product or many products at the same time. 5) Required details during order of product / service of a company (include : name, delivery address, payment evidence (e.g bank teller number)). System should automatically give the total sum or product & group total sum also in the case of several products / services 6) Page to display unique identifier of request and any other information regarding the request. 7) Client should be able to edit submitted request only 3 hours after initial request 8) Cancellation of request should be made possible at any time...during and after the request 9) Confirmation of cancellation and submission of request should be enabled.