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International Service Access Limited (ISA) is a full Service Outsource Agency that was originally founded in 2001. The company specializes in Mystery Shopper, Outsource Project for Direct Sales, Promoters, Staff Offers and Event Marketing programs etc.

ISA is currently possessing 4,000 professional shoppers, with more than 10 years experience in providing mystery shopper services, we keep being regarded as the leading provider in Hong Kong. Since 2001, we have been serving a lot of world-wide well-known companies, conducted 80,000 visits per year to varies retail outlets in different parts of Hong Kong. The amount and diversity of our clients are growing each year.

Over the past years, we have been receiving numerous of positive feedbacks from our clients. Most clients rank our service at high satisfaction level. Their repeat orders & reviews in program encourage us to strive for excellent service.