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Features ：PA66+35%GF、deformation and sealing requirements

This product used in heavy duty truck D20 engine cylinder head, the assembly relationship requires very hign, forming by PA66+35%GF,the biggest deformation more than 14mm,after predeformation adjusting, the whole product profile tolerance in ±0.5mm, all the screw hole position ±0.3mm, tolerance on shape and dimension ±0.2mm, overall flatness 0.3/100.