One of the most significant considerations when shipping into Mexico is the type of pallet used due to strict regulations regarding the material they are made from. An error here will result in goods being sent back to you at your own expense.
Mexico has an incredibly complex tax structure as well as several compliance requirements. For instance, most electronic gear will need a Norma Oficial Mexicana (NOM) certification. NOMs are specific to the product manufacturer, and Mexican customs authorities have become increasingly strict with enforcing NOM regulations.
Mexico, with the US and Canada, form part of the North American Free Trade Agreement. As with other FTAs, this aids in removing barriers to trade among party members. However, you will still need a locally registered entity to act as the Importer of Record (IOR) to clear your goods through customs.