Zhejiang Jingzhu Machinery Co., Ltd
Zhoushan Dinghai Shuangli Plastic Machinery Factory
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Alloy steel for screws
Alloy steel for cylinder
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0580-8040046
SBK1 Series
SBK3 Series (Iron-based alloy material tube)
SBK5 series (nickel-based alloy barrel)
SBK7 Series