About product and suppliers:
            250 companies that make prototypes products are offered for sale by suppliers on Alibaba.com, of which machining accounts for 28%. 

A wide variety of companies that make prototypes options are available to you, such as micro machining, not micro machining. You can also choose from cnc machining companies that make prototypes, as well as from aluminum companies that make prototypes, and whether companies that make prototypes is broaching, rapid prototyping, or drilling. 

There are 119 suppliers who sells companies that make prototypes on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of companies that make prototypes supply is 100% respectively.