The phrase "are designed by their" is correct and usable in written English.
It can be used in contexts where you are discussing how something is created or structured by a specific group or entity.
Example: "The products are designed by their respective teams to meet the needs of the customers."
Alternatives: "are created by their" or "are developed by their".
Some foods are designed by their manufacturers to combine a certain mouth feel, saltiness and sweetness that some of us find addicting.
Lipsky's Street Level Bureaucrats theory highlights that frontline health providers do not just mechanically implement the policies that are designed by their superiors [ 9].
Similarly, they presume that human artifacts, such as chairs and coats, are designed by their creators to fulfill some intended purpose (e.g., chairs are to sit in; coats are to keep us warm).
"My engineers tell me the Sonic Cruiser was designed by their P.R. department," he added.
Both were designed by their proprietors and fulfil the obligatory bed and breakfast requirements brilliantly.
Diski connects the rise of shoplifting to the advent of department stores, "which were designed by their owners as great machines for the simultaneous circulation of goods, women, and money".
Shoplifting's crucial historical moment occurred in the mid-nineteenth century, with the advent of department stores, which were designed by their owners as great machines for the simultaneous circulation of goods, women, and money.
It is no small accomplishment to have created an unmistakable brand identity out of a handful of patterns in yarn, as did Tai and Rosita Missoni, the founders of the knitwear label that bears their family name, and which is designed by their daughter Angela.
This article also elaborates how active Ru complex can be designed by their rate of hydrolysis, kinetics of ligand exchange, pKa of the aquated species.
In part, the charges are designed by each party to get out their core supporters to the polls.
