求翻译：材料应附有质量合格证明书，其抗拉强度、伸长率、屈服点、冷弯试验、冲击韧性及碳、硫、磷的极限含量符合《碳素结构钢》（GB700-88）的规定。是什么意思？

Quality materials should be accompanied by a certificate of compliance, its tensile strength, elongation, yield point, cold bending test the limits of the impact toughness of carbon, sulfur, phosphorus content in line with the provisions of the "carbon steel" (gb700-88) .

Materials should be accompanied by a quality certificate, its tensile strength, elongation, yield point, cold bend testing, impact toughness and carbon, sulfur, phosphorus limits consistent with the content of carbon steel (GB 700 - 88).

The material should attach the quality qualified certificate, its tensile strength, the elongation ratio, the yield point, the cold bending test, the resilience and the carbon, the sulfur, the phosphorus limit content conforms to "Carbon Structural steel" (GB700-88) stipulation.

Quality of material should be accompanied by a certificate of compliance, its tensile strength, elongation, yield point, cold bending test, impact toughness and limit of carbon, sulfur, and phosphorus content in line with the carbon structural steels (GB700-88) requirements.

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