Being a former procurement manager in Cisco, I have my own connection with many ISO9001 manufacturers. They are real factory, not trading company. Thus they can offer best quality yet cost effective products to you.
My connection is doing great job in metal precision & plastics OEM, ie
I can connect you with them, and request quotation from them on your behalf.
??My suggestions are specialist in Metal precision & Plastics OEM. They focus on manufacturing, but not digital marketing. So you hardly find them online.