I am a SPR and have a Sole Proprietorship which was registered with ACRA under a name specific to an area in my market of interest. I intended to sell predominately on-line in Singapore. I now wish to expand to other areas within the same market and have registered separate websites, each aimed at these different areas. The website names (or versions of them) are the brands I wish to use for sales receipts, invoices etc. The question is, in order to do that do I need to register separate companies aligned with each website in order to be able to use the brand on invoices or can I use the brand and then have a line on the invoice stating something like "This website is run by XXXXX" and include the ACRA registration number for XXXXX. Note all websites are .com and not .com.sg or any other Singapore specific domain.
An example to try to help understanding and maybe bring a smile

A company (Sole Proprietorship) offering Honda body kits for purchase and install calls their company "Singapore super one Japanese car body kits Pow" and registers a website (http://www.honda-body-kits-singapore-nu ... re-lah.com).
The distributors that this company gets parts from also sell parts for Volvo bodykits and internal items for any car brands like fluffy dice.
The company owner decides to expand to other products but chooses to register another website for selling Volvo bodykits (www.Volvo-bodykits-are-babe-magnets-lor.com) and another for internal ornaments for peoples cars (www.Men-who-have-fluffy-dice-have-more-fun-one.com).
Obviously for sales via www.Volvo-bodykits-are-babe-magnets-lor.com they do not want invoices headed with "Singapore super one Japanese car body kits Pow". Do they need to register new companies to match the website brands (or be more aligned to the website brands) or can they use the website brand but put the underlying company details as required on a footer ?
The preference is not to change the original company name as it is the one signed up with multiple distributors and that process was a major PITA.
So how best to handle multiple brands via separate websites (one site selling everything is really not a direction I wish to go in due to a vast array of products in each market area) and, just as important probably, lock in brand ownership to the company.
If the question is of too big a scope to easily respond to then any direction on who to approach for advice would also be very welcome.
Many thanks
RB