Welcome to DEMCO
Plastic Injection Specialists

With our technical expertise and broad production capability, DEMCO is well placed to provide a complete service from product design and tooling to manufacturing in accordance with customer's quality standards and specifications.


We Specialize In:

Dropper Components
Vaccine Vails
Blow Moulding
Injection Moulding
PET Bottles
Triggers / Sprayers / Pumps

Thermoset Molding

Vaccine Vails

Dropper Components

PET Bottles


What We Do:

We supply Plastic components to the pharmaceutical, vetenary, cosmetic, and automotive industry. 

DEMCO (Diemaking Engineering and Manufacturing Company) was established by Mr. De Munnik in 1954 and taken over by Mr. B Katzlberger the present owner in 1972 and operates out of two adjacent, wholly owned factories in Germiston, comprising a covered area of 5 000 m ².

With the ever increasing demand for innovation and sustainable products required by our diverse customer base, we have diversified into blow moulding and injection blow moulding.

DEMCO specialises in two very diverse and technical fields of plastics conversion, namely:
• Moulding of tight tolerance dropper bottles and closures; medicinal and veterinary containers and bottles under clean room conditions as well as cosmetic and other packaging including pumps and sprayers.
• Thermoset moulding of bottle closures and components for the electrical, automotive and domestic appliance industries. All items are moulded to close tolerance and the appearance is of the highest quality. Finished goods are closely inspected by the strict quality controlled regulations, ensuring the highest standards are achieved.