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With a positive and progressive attitude to customer's interest, our company continuously improves our product quality to meet the needs of customers and further focuses on safety, reliability, environmental requirements, and innovation of
Heat Treating 4150 Steel , Heat Treating 4140 Steel Bar , Heat Treating 4150 Steel , With the advanced workshop professional design team and strict quality control system based on mid- to high-end marked as our marketing positioning our products are fast selling onto European and American markets with our own brands such as below Deniya Qingsiya and Yisilanya.