Finished Product
Low Temperature Test
The low-temperature chamber evaluates WPC adaptability under temperature cycling and cold environments, proving product stability in freezing climates.
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Six laboratory tests, from raw wood flour to finished boards — the science that guarantees every SENYU WPC product stays stable, strong and beautiful outdoors.
Every co-extrusion decking board starts long before extrusion: wood flour must be dried to ~3% moisture, PE granules must show the right melt fluidity, and finished boards must survive heat, cold, sunlight and load.
That's why SENYU built a dedicated in-house testing lab covering both raw materials and finished products — so performance problems are caught at the source, not on your project site.
Test results feed directly back into our WPC decking, wall panel and fencing formulations, keeping quality consistent batch after batch.
Three tests protect what goes into the material; three tests prove what comes out of it.
Finished Product
The low-temperature chamber evaluates WPC adaptability under temperature cycling and cold environments, proving product stability in freezing climates.
Finished Product
Alternating light and moisture cycles detect fading, discoloration, gloss loss, powdering, cracking, blistering and oxidation — the true measure of outdoor durability.
Finished Product
Compression and bending tests determine bending strength and elastic modulus — the structural indicators joist span and load capacity are designed around.
Raw Material
Wood flour is dried to about 3% moisture before mixing. Excess moisture is the enemy of WPC quality — causing foaming, water absorption and deformation.
Raw Material
Measuring ash content quantifies inorganic substances in wood flour, keeping every batch of raw material within specification.
Raw Material
Melt fluidity decides how PE granules flow and form during injection molding and extrusion — the key to smooth, defect-free board surfaces.
From the die to the cooling table — see how a WPC decking board is produced and inspected in real time.
SENYU WPC production line — co-extrusion process, on-site quality inspection
Professional equipment is the foundation of reliable data. Our lab is fully equipped to run every test above in-house — no waiting on third-party laboratories for routine batch control.
Our team combines production, sales, R&D and test engineers with senior technical workers who have more than 15 years of hands-on WPC experience.
Whether it's spec compliance for a public tender or technical data for your own customers, our engineers will provide the test data you need.
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