Sale of UV equipment for disinfection

A very complex site. Features: prices are hidden from unregistered users (will be disabled later), different prices for different categories of users, different currencies in the control system and on the site, automatic invoicing and invoices, complex organization of categories and a complex product filter, different on different pages, a system for loading 800 products at a time from an xlsx table, variable products and displaying variations in tables, additional fields for placing an order and sorting by these additional fields in the control panel, a system for mass editing of products, a membership system, a system for approving applications for registration, different forms for different categories of visitors.