The phrase "a solid customer base" is correct and usable in written English.
You can use it to describe the foundation of customers who are loyal to a business or the customers who have purchased a product from the business. For example, "The company had a solid customer base which enabled them to stay in business for many years."
"The Times and Sunday Times pioneered digital subscriptions and today we can see a solid customer base across every platform, including print," said Mike Darcey, the News UK chief executive.
A 20-year legacy that he and his friends built with the Monte Carlo Living Room Restaurant and Primavera Restaurants in Philadelphia held him here as well and helped him build a solid customer base for his first solo venture.
Anna Cusden, communications director of Look Fabulous Forever – which has used YouTube videos and blog posts to build a solid customer base – said: "Video is something that's been central to the success of our business.
H&R Block is a great brand with a solid customer base (22 million) and a ubiquitous presence (11,000 offices worldwide).
This is obviously the first step and the company is hoping to build a solid customer base beyond its early beta pool.
Notebaert paid tribute to Qwest's "superb assets, a powerful position in its 14-state region, a solid customer base, a strong management team and a talented and resilient workforce".
The Goldman analyst liked OpenWave's strong product line and solid customer base, which position the firm for some serious growth when 3G wireless finally becomes a reality.
Most online delivery companies, Mr. Harvey said, began with a "throw seeds out and watch to see if anything will sprout" approach and quickly found that the disabled could become one of their most solid customer bases.
The block of East 41st Street just across from the famous lions has several informal Japanese spots that attract little hoopla and a solid Japanese customer base.
In Glossybox, we have acquired a great brand, with a solid and engaged customer base that, once powered through our platform and marketing infrastructure, should be capable of further significant growth".
"NetGravity adds a whole new customer base [for DoubleClick],".
