SSI is the premier global provider of data solutions and technology for consumer and business-to-business survey research. SSI reaches participants in 90+ sample countries via Internet, telephone, mobile/wireless and mixed-access offerings. SSI staff operates from 40 offices and remote staff in 20 countries, offering sample, data collection, CATI, questionnaire design consultation, programming and hosting, online custom reporting and data processing. SSI's 4,000+ employees serve more than 3,000 clients worldwide.

Link：https://www.surveysampling.com/