Top 10 EMS providers / ODM rankings, ratings, reviews

Noteworthy changes in EMS and ODM company rankings for 2010 v. 2009 are below.  Additional information for each company can be found by clicking on a company name which takes users to that company’s top 10 page where users can vote and rate EMS and ODM companies and write comments and share experiences or provide insight working with particular EMS and ODM companies with other site users.

• EMS provider Plexus moved up two spots to No. 8.
• EMS provider Sanmina-SCI moved down two spots to No. 6.
• EMS provider Venture Corp. moved down two spots, finishing the EMS list at No. 10.
• EMS provider Elcoteq did not make the 2010 EMS list.
• June 2010: Advanced Semiconductor Engineering, Inc bought all outstanding shares of EMS provider USI, hence the name change.
• Q3 2009: ODM High Tech Computer Corp. (HTC) exited the ODM market.
• Q2 2010: ODM ASUSTeK’s ranking in ’10 included company-branded revenues which represented a minority of ASUSTeK’s overall business. With Pegatron separation now complete (June 2010), majority of ASUSTeK revenues are derived from company-branded operations and therefore only Pegatron will be included in the 2011 top 10 ODM rankings (published Q1 2012). Meanwhile, full year 2010 revenues that were counted moved ‘Pegatron + ASUSTEk’ from No. 2 (sans Pegatron) to No. 4.
• ODM Compal Electronics moved up one spot to No. 2.
• ODM Wistron moved up one spot to No. 3.
• ODM Cal-Comp Electronics replaced HTC at No. 6.
• ODM Qisda Corp. moved up one spot to No. 8.
• ODM MiTAC moved down one spot to No. 9.

Both EMS and ODM company ranking lists are created with the help of IDC which ranks companies based primarily on their EMS or ODM revenues. IDC tries to separate company-branded product sales, from overall EMS and ODM company sales, and then assigns companies a ranking to either the EMS or ODM competitive set based on that company’s business model and heritage.

Per IDC, some ‘top’ lists readers may come across elsewhere (online or in print) also include revenue from EMS or ODM company-branded product and / or upstream component revenue from separate entities (e.g., non-EMS and non-ODM business) within a corporate group. Additionally, IDC states it tracks a named company only when it can reliably gather quarterly financial data from the company that can be verified by a third party. Readers should be aware efforts are made for the top 10 EMS / ODM lists on this Website to focus primarily on EMS and ODM revenue.

Company ranking list: IDC, 2011