MAC company (Maurepas - 78)
Since its creation in 1982 the MAC company, at the time, acronym of Mechanics André COLLOT (name of his founder), did not stop evolving.
First of all specialized in the mechanical parts for the automobile, it becomes MAC, " Flight mechanics  - Workshops of Coignières " during its repurchase in 1990, and turns more widely to the sectors than are the aeronautics and the spatial.

In 2003, its new CEO Mr Georges DA COSTA, aware of the potential and the recognized know-how of MAC, he decides to give to him a new boost by putting at the heart of his strategy:
· Quality
· Growth
· Diversification
For that purpose, he decides to implement with his teams all the means which will allow the company to concretize the determining quality policy in the strategy of the company.

The Quality system is melted again according to the standards ISO 9001 and 9100.
A traceability is organized thanks to the use of computing tools ( GPAO), and successful processes.
The park machines complete, is renewed and growing regular.
Means of measure in the micron and in the hundredth in a room with atmosphere controlled are set up (three-dimensional machine, projector of profiles, column of measure)

SO industrie company (Clamart - 92)
The SO cIndustrie company was created in 1985 by Mr STALLOCCA and his associates.
In 2007, Mr. DA COSTA buys back the company and sets up a new strategy of development.
The activity of the company is the manufacturing of mechanical details parts in average and big series.

Working as subcontracting for the production of mechanical parts in the field of the hydraulics, gas, faucet factory, instrumentation …
The SO company can also realize studies of parts because working in partnership with an external office of study.

AGP company (Carrières-Sous-Poissy - 78)

Created in 1956, the AGP company " Affûtage Général de précision " had for main activity the sharpening of cutters, blades, banisters and shears. After a few years of development, the partners reorientate the activity towards the flight mechanics: the milling and the turning as well as the rectification and the associated services (heat treatment of surface, assembly) in the domains of the public works, the automobile, the aeronautics and the equipment. it takes a new axis of development in 1990 during its purchase by Jean Philippe PETIT: the company reorientates then its production towards the manufacturing of prototypes and pre - series in the sectors of the aeronautics and automobile.

In 2007, after his retirement, the company is bought back by Mr. DA COSTA.
The structure then got modernized by the implementation of a system of GPAO which allow to standardize the activities of the company with a complete IT follow-up of the production: From the material stock until the delivery with declaration of conformity, including the commercial part: of the estimate in the invoicing.
The control was also optimized by the installation of a Three-dimensional machine.

ACMR company (Vitry-Sur-Seine - 94)

Established in 1984, the ACMR company " Association des compagnons moulistes réunis " is specialized in the study and the design of metallic molds for the injection of plastic in the domains of the perfumery, the automobile, the cosmetic, the office automation, the aeronautics …
Facing of the specific competition of emerging countries in this business sector during the previous decade, the ACMR company declined.
In 2010, Mr Georges DA COSTA, buys back the company which becomes ACMR SOCIETE NOUVELLE.

This is the way the company gets modernized, acquires new machines, is equipped with more successful computing means, allowing to take up with the local market.
Today, from a model or from a plastic part, the company, strong of 30 years of experience, realizes the study, the manufacturing of the mold and the tests of the first injected parts.
The part "Study" is one of the key points of the company, which will realize with attention all the studies which could be entrusted to it.