供应PET和亚克力型广告级(经济级)反光膜，工程级反光膜，高强级反光膜，钻石级车贴。
Provide for PET and Acrylic Reflective sheeting. It have these grade: economic grade, engineering grade, high intensity grade, Diamond grade.
并结合C80级高强混凝土的施工实际，验证高强混凝土强度存在波动性的同时也符合正态分布规律。
And it is proved that high-strength not fluctuated, but also follow the law of normal distribution through practical applications C80 high-strength concrete.
为提高国产钻杆的市场竞争力，改善其使用性能，我们与宝钢合作，开展了《高强度钻杆的开发》这一国家级课题。
In order to improve on the properties of drilling pipe and its competitive price, a research on design and manufacturing high strength pipe is done based on a cooperation between DUT and Bao Steel.
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