It's probably a little more difficult to exert influence "offline". For example, ask existing customers whether they would be available as references. By that, I don't mean a standardized slide describing their collaboration. I also don't mean a generic quote that you put on your website. All of that is good and important, but perhaps you can expand on these methods.
Ask your customers to recommend you. There is nothing wrong with actively encouraging referral marketing. If you know that a potential customer is familiar with one of your existing customers, ask them if they can share their experiences working with you.
New and existing customers don't know each other? Maybe not yet. Ask your customer if they would be willing to have a short phone call with your prospective customer. If ecuador telegram screening you have a good relationship, very few will refuse and this transparency will be worthwhile for the prospective customer.
Write about your customers and the collaboration. Not short and sweet as mentioned above, but detailed, emotional and captivating. Don't put on a PR show, but let your customer take the stage. For example, they can use your website to present what they do, what makes them so special and what the relationship between you is. They will probably share this post in their network and you will both benefit from it.
Use (not exploit) the pride of your employees. Your employees are the best advertisers for your products. They know their stuff and are the experts in the field among your acquaintances. Perhaps you can reward a colleague when he brings a new prospect. It's not about big financial incentives, but about recognition and strengthening the sense of community.
Reward the referrals, but please make it transparent for both sides. Depending on the business model, referral programs can work very well. The online service Dropbox (internet storage space) rewards both sides with additional storage space when a referral is made and is very successful in this way.