The industrial factory produces some custom plastic parts. For meeting the demand of TPU material mats for our main products. That is car key covers, which are made from zinc alloy material casting to be shaped into metal protection cover for various popular car and vehicle’s key cases. However these TPU mats are often used as water proof inner mats and protecting the buttons of the car keys well. In another one, we also produce some custom automotive parts and electronic components so that supply more automotive fields and electronic communication fields.


What Are Custom Plastic Parts?
Custom plastic parts are a kind unique plastic parts, which are made according to special demand and functionalities in different applications. Client provide their design concept or drawing files to manufacturers to produce the custom plastic parts that conform with special functions and applictions. Rely on their skilled technique, abondant experiences and advanced equipment, manufacturers take their ideas to produce specific specification plastic parts, deliver these products to client successfully in time. The specific specification plastic parts are called as custom plastic parts.
Types of Plastic Parts
Injection Molded Part
Created by injecting molten plastic into a mold. Common for high-volume production of precise, complex shapes (e.g., car parts, toys). It has a high productive rate and fast delivery time.
Extruded Part
Made by forcing plastic through a shaped die; often used for pipes, tubes, and profiles. It is a big size streamline production and consistence.
Blow Molded Part
Produced by inflating molten plastic into a mold, commonly used for hollow objects like bottles and containers.
3D Printed Part
Fabricated by adding layers of plastic material, used for prototypes or custom parts. Some present model and first trial sample testing is commonly used.
Common Plastics Material Used
- Polyethylene (PE): Durable, strong corrosion resistance, used for plastic packaging and containers.
- Polypropylene (PP): Hardness and high stess, Used in automotive parts, packaging, and textiles.
- Acrylonitrile Butadiene Styrene (ABS): Common electronic consumer goods, gifts and daily goods.
- Polyvinyl Chloride (PVC): Good toughness,Used for pipes, window frames, and medical devices.
From small precision components in electronics to large structural parts in vehicles or machinery, plastic parts play a vital role in various industries. If these parts are custom plastic parts, we should produce them according to client’s special requirements and desire. Because we have ability to finish any custom plastic parts from any client.
Car Key Case Cover’s Custom Plastic Part
Zinc alloy casting parts, which were made into metal car key cover frame, houses the car key and can protect the car key from crashing by weights by accident. meanwhile, all buttons on the key, electric components and chips should be prevented from water. In one aspect, these buttons can be wore after a long time, make displayed pattern not clear and impact driver’s operation. In another one, car key electric components and chips can be short circuit for a splashing water or touch the water. So this plastic water proof mat is indispensable part for a metal car key cover frame.




This kind of plastic water proof mat is made of soft plastic material, which is TPU material, it is injected by precision plastic injection mold in accordance with the car key different shape. Sometimes some mat is also on which surface of them are engraved with operation patterns due to these mats is not transparent.
In summary, Because these plastic parts are used in different applications, it makes them change parts process procedure. But these parts are all made of plastic material. Custom plastic parts are more challengable, Some like car key cover parts, that is our strong points.
Plastic Car Key Case Cover Is Attractive, Too
Plastic car key cover may be made of ABS material, and it is not transparent, so on the surface of which should be engraved or printed with some operation labels. It conform with International Environmental Protection Standard, Belong to green ECO friendly products, but also custom appearance design and production is acceptable.




TangSheng Hardware Technology Capability is visible
Die casting metal parts
Our own die casting metal parts production lines , process and produce metal die casting parts
Plastic injection parts
Building own plastic injection parts streamlines, can manufacture many creative plastic injection parts
Casting part polishing
Polishing the surface of die casting parts well,smoother is for metal products, more easier to be electroplated
Mold Design and Manufacturing
Design the mod , include of plastic injection mold and metal casting die, then manufacturing these mold by mold workshop.
Assembly and Packaging parts
In where, all parts can be collected here, operator will install metal parts and plastic parts together and then finish the package.
Laser Engraving pattern
The factory has 5 sets of laser engraving machines, which can mark some patterns on these parts, whenever plastic parts or metal casting parts.

What’s Your good idea?
Do you really want to find one of professional metal casting factory to finish your project? If you want, please contact us by Email , We also hope to have a chance to work with you