About product and suppliers:
            401,309 certificate products are offered for sale by suppliers on Alibaba.com, of which inkjet printers accounts for 4%, paper & paperboard printing accounts for 1%, and book printing accounts for 1%. 

A wide variety of certificate options are available to you, 

There are 3,872,847 suppliers who sells certificate on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and India, from which the percentage of certificate supply is 1%, 95%, and 1% respectively. 

Certificate products are most popular in United States, Canada, and United Kingdom.