STEP 1
Raw Material Verification
Incoming PP / ABS virgin resin is checked for melt flow index, purity and absence of regrind contamination.
Pass Rate: 99.7%Critical Priority
Quality Metrics Dashboard
The industry benchmark, defined by data. We continuously monitor key quality indicators to ensure consistent excellence.
99.8%
First-Time Quality
Industry Top
0.17%
Defect Rate
-12% YoY
0.32%
Return Rate
-8% YoY
99.3%
Supplier Quality
+5% YoY
The 27-Point Inspection Protocol
Shanghai Doan's exclusive Quality Agreement Whitepaper. These 27 radically transparent, industrial-grade inspection points are our ultimate commitment to every B2B partner.
STEP 2
Impact Modifier Ratio Testing
Verification that impact modifiers and UV stabilisers fall within the engineered 6-8% range for optimal durability.
Pass Rate: 99.9%High Priority
STEP 3
Panel Abrasion Testing
Taber abrasion testing to confirm surface wear resistance exceeds 30,000 cycles under site conditions.
Pass Rate: 99.5%High Priority
STEP 4
Steel Frame Quality
Verification of Q235 steel frames through tensile strength testing and full weld-seam examination.
Pass Rate: 99.8%High Priority
STEP 5
Hardware Quality Check
Inspection of all pin, wedge and clamp components for specification, finish and corrosion resistance.
Pass Rate: 99.9%Medium Priority
STEP 6
Bond Strength Testing
Verification of panel-to-frame bonding through shear and pull-out testing at ambient and elevated temperature.
Pass Rate: 99.6%Critical Priority
STEP 7
Dimensional Accuracy
Precision measurement of every panel to ensure conformance within a ±0.5 mm tolerance band.
Pass Rate: 99.8%High Priority
STEP 8
Joint Integrity Testing
Verification of all interlocking joints for proper alignment, clearance and locking force.
Pass Rate: 99.7%Critical Priority
STEP 9
Load Capacity Testing
Load testing of wall and column panels to verify they exceed the rated pouring pressure by 50%.
Pass Rate: 99.9%Critical Priority
STEP 10
Stiffness & Deflection Testing
Deflection testing under full hydrostatic head to confirm panels meet anti-deformation standards.
Pass Rate: 99.8%Critical Priority
STEP 11
Assembly Verification
Confirmation that every component assembles correctly according to the approved shop drawing.
Pass Rate: 99.6%High Priority
STEP 12
Fastener Torque Check
Verification that every tie-rod, pin and wedge is tightened to the specified torque value.
Pass Rate: 99.9%Medium Priority
STEP 13
Surface Finish Quality
Visual and tactile inspection of every panel face for flatness, consistency and absence of defects.
Pass Rate: 99.5%High Priority
STEP 14
Edge Treatment Verification
Confirmation that all edges are chamfered and sealed for safe handling and best release performance.
Pass Rate: 99.7%High Priority
STEP 15
Release-Agent Durability Testing
Repeat-pour testing to confirm the release coating withstands the specified number of casting cycles.
Pass Rate: 99.6%Medium Priority
STEP 16
Colour Consistency Check
Verification that all coloured components match the approved colour standard within tolerance.
Pass Rate: 99.4%Medium Priority
STEP 17
Concrete Finish Inspection
Trial panel casting to confirm the resulting concrete surface meets the specified finish class.
Pass Rate: 99.5%High Priority
STEP 18
Reinforcement Inspection
Examination of reinforcing ribs and frames for correct placement, coverage and weld quality.
Pass Rate: 99.7%High Priority
STEP 19
Sharp Edge Detection
Comprehensive inspection for sharp edges, burrs or protrusions that could pose handling hazards.
Pass Rate: 99.9%Critical Priority
STEP 20
Tipping Risk Assessment
Stability testing of assembled panel stacks to ensure units meet anti-tipping standards.
Pass Rate: 99.8%Critical Priority
STEP 21
Chemical Safety Testing
Verification that all materials and coatings meet or exceed standards for VOCs and toxicity.
Pass Rate: 99.9%Critical Priority
STEP 22
Entrapment Risk Check
Inspection for gaps or openings that could trap fingers or tools during assembly and stripping.
Pass Rate: 99.9%Critical Priority
STEP 23
Small Parts Verification
Confirmation that all pins, wedges and clips are securely attached and accounted for in every set.
Pass Rate: 99.8%Critical Priority
STEP 24
Fire Safety Testing
Verification that all materials meet fire-resistance standards appropriate for construction site use.
Pass Rate: 99.9%High Priority
STEP 25
Packaging Integrity
Verification that packaging protects the panels across the specified shipping and handling route.
Pass Rate: 99.7%Medium Priority
STEP 26
Documentation Verification
Confirmation that safety notices, assembly drawings and test certificates ship with every order.
Pass Rate: 99.9%Medium Priority
STEP 27
Final Visual Inspection
Comprehensive final review by a senior quality control specialist before shipping approval.
Pass Rate: 99.8%Critical Priority
Quality Control Team Structure
Our dedicated team of quality specialists works collaboratively to ensure every product meets our exacting standards before reaching our customers.
15
QC Inspectors
8
Lab Technicians
40+
Annual Training Hours
8+
Years Avg. Experience
Led by a Director, our fully certified team holds ASQ CQE and Six Sigma qualifications — ensuring every inspection meets world-class manufacturing standards.
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