Amotic Technology
How Amotic Technology design and manufacturing complex parts

First by necessary below mass run production preliminary processes,from design(reverse engineering possibly) to manufacturing(DFM). 

CNC Machined Prototypes
CNC machined prototypes are available in a huge range of plastics, metals, and modeling boards. Most customers go with CNC machined prototypes in order to prototyping produced out of the real material rather than a simulator. 

Vacuum Castings
Polyurethane vacuum casting allows for an extended prototyping service through a multi-step process. First making a prototype via CNC or SLA or SLS, then creating a silicone mold around the prototype to easily manufacture multiple identical polyurethane prototypes. 

This process is often preferable if the master pattern is bulky or thick. CNC machining is also the chosen process if the vacuum castings must have an excellent gloss finish or are to be clear. For these castings,there is subsequent CNC and hand polish process if surface treatment required.

SLA & SLS Rapid Prototypes
SLA & SLS prototypes are ideal for rapid, one-off prototypes. SLA prototyping transforms a liquid photo-polymer into a solid plastic prototype, layer by layer. SLS prototyping is a similar manufacturing process to SLA, SLS spent much more powered laser to bond plastic powder together to form a 3D prototype.

After prototype appearance and functional test passed then moving forward to mass production, with different mold molding such as die casting,stamping,bending,injection way.