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No. 8 Gaozhuang West Road, Modern Industrial Park, Tianzihu Town, Anji County, Huzhou City, Zhejiang Province
Studs
| Standard | Size | Grade | Surface Treatment |
| GB/T901 / GB/T900 | M5-M90 | 4.8/5.8/6.8/8.8/10.9/12.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| GB/T899 / GB/T898 | M5-M90 | 4.8/5.8/6.8/8.8/10.9/12.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| GB/T 20634 | M5-M90 | 4.8/5.8/6.8/8.8/10.9/12.9 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| ASTM A193 | M5-M90 1/4"-4" | B7/B8/B16 | Black / HDG / Dacromet / Mechanical / Sheradizing |
| Wind Turbine Blade Bolt | M36 | 10.9 | Dacromet |
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