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See Chinese contents: QC/T 850-2011 QC/T 850-2011: Polyurethane foam for seating of passenger car
This standard specifies the grading, requirements, test methods, inspection rules as well as marking, packaging, transport and storage of cushions and backrests made from polyurethane foam for foamed seating (with fixed shape) of passenger car. This standard is applicable to polyurethane foam used as antishock and comfort cushion materials for making cushions and backrests of seating of passenger car.
