The phrase 'substantial inventory' is correct and can be used in written English.
You might use it to describe a large amount of items, such as in the sentence, "The hardware store had a substantial inventory of tools."
Few organizations have the upfront money to build a substantial inventory.
Emerging neighborhoods like Harlem, the financial district and Downtown Brooklyn still have substantial inventory, and prices will stay stable.
"Restoring inventory-to-sales ratios to moderately higher levels will require substantial inventory investment," said Steven Wood, president of Insight Economics in Danville, Calif.
In this way, even without collecting an enveloping gaseous atmosphere, a newly formed planet could include as material occluded in its constituent grains a substantial inventory of volatiles.
Although the Wohlwill process produces gold of high purity, it requires the producer to keep on hand a substantial inventory of gold (mainly for the electrolyte), and this is very costly.
Fantasy lasted for only three issues before dying in 1947, but Gillings had accumulated a substantial inventory of stories enough to fill nine issues.
China's working-age population continued to shrink in 2014, and real-estate developers reported substantial inventories of unsold housing.
As Tim Bray writes, "we blew through the (substantial) initial inventory in almost no time, and they're back-ordered from HTC".
That process can sometimes be just a few days, which means that Ribbon doesn't need to hold substantial housing inventory or take on macroeconomic risk, and can turn over its debt quite rapidly.
However, the post-Fukushima safety concerns related to large nuclear plants with substantial radioactive inventories will be especially pronounced in Africa.
Singer Capital Markets said: "This anecdote should be seen as a significant positive indicator for Kingfisher (B&Q) and Home Retail (Homebase), which both Wintered substantial surplus cooling inventory after last Summer's dire weather".
