About CPlastics
Own site, own lines, own laboratory. In compounding, what matters is formulation consistency and delivery certainty.
Company profile
Qingdao Yunsu Polymer Material Technology Co., Ltd. — CPlastics — was founded in 2016 as a high-tech enterprise dedicated to developing, producing and exporting high-performance modified engineering plastics. The plant occupies 15,000 square metres in Fanggezhuang Industrial Zone, Duanbolan Town, Jimo District, Qingdao, Shandong.
Our customers are injection moulders and parts makers worldwide, alongside domestic manufacturers of automotive parts, household appliances and power tools. We cover six families — PP, PA, PC, ABS, PC/ABS and PPS — and adjust formulations to each customer’s real duty cycle.
Why formulation and testing must stay in-house
Properties are not decided by the base resin. Two grades both labelled PA6 GF30 can differ by more than 15% in tensile strength because of differences in glass fibre length retention, coupling agent and stabiliser package. The gap rarely shows in a short trial, but it does show up in moulding yield and batch consistency at volume.
So CPlastics keeps three things close: formulation development, compounding and performance testing. That is the basis of our batch-consistency commitment, and why we do not compete on price alone.
Our Site and Testing Capability
Formulation
System and loading set against your wall thickness, temperature, load and certification needs.
Twin-screw compounding
Side feeding preserves fibre length; vacuum devolatilisation cuts volatiles.
Pelletising & homogenising
Underwater or strand pelletising, then lot blending to stabilise batch variation.
Release testing
MFR, ash, tensile, flexural and impact tested per lot with COA issued.
- ISO 9001 Quality ManagementCovering formulation, compounding and release testing
- ISO 14001 EnvironmentalEmissions, dust and regrind management
- IATF 16949:2016Automotive quality management requirements
- RoHS / REACH declarationsDocumentation for EU-bound programmes
Inside a leading NEV maker's supply chain: how our compounds get used
Compounding is an invisible business. Once the pellets leave our plant they pass through drying, injection moulding, assembly and final vehicle roll-off before they leave any trace on a car. That is why we visit our customers' plants, to see what our material actually becomes.
In September 2026 we visited the North China vehicle plant of a leading new-energy vehicle (NEV) maker. Its NEV models use modified engineering plastics extensively for interior and exterior parts, including PP compounds and PC/ABS alloys supplied by CPlastics.
From pellet to bumper
Bumpers are one of the most typical applications for modified PP: large surface area, thin wall, and simultaneous demands for low-temperature impact resistance, weatherability and paint adhesion. The critical requirement is not how high any single figure is, but the balance between flowability, impact toughness and dimensional stability. What injection moulders fear is not an ugly datasheet, but shrinkage that differs from the last batch, so that clips no longer line up during assembly.
That kind of problem cannot be caught by sampling inspection. It can only be guaranteed by the formulation system and compounding consistency. It is also the reason we keep formulation development, twin-screw compounding and factory testing in-house.
Note: photos were taken at the customer's plant and have been anonymised to protect commercial information; they do not identify a specific company or vehicle model. Confirmation of customer references can be discussed separately during commercial negotiation.
The same capability is open to more customers
Automotive has long validation cycles and heavy documentation requirements. Getting a compound into an OEM supply chain is itself a screening of formulation capability and batch stability. Our customers today are mainly injection moulders in Southeast Asia, and we also handle enquiries from European sourcing offices, covering automotive parts, home appliances, power tools and electrical & electronic applications.
If your part also faces thin walls, tight assembly tolerances or batches that must not drift, send us the actual operating conditions and we will come back with material-side recommendations.
Four things buyers ask about CPlastics
Which certifications does CPlastics hold?
Where is the plant, and what capacity does it have?
Which countries do you export to?
How long do sampling and production take?
Have you supplied into an NEV maker's supply chain?
Prefer to test a sample first?
Tell us the part and volume and we will arrange samples; stock grades can ship the same day.