ZhenAn International Co., Limited: We're known as one of the most professional ferro silicon, ferro silicon aluminum, silicon slag, graphite powder, cored wire manufacturers and suppliers in China.
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ODIFEI is one of the most professional waste oil to diesel manufacturers and suppliers in China. If you're going to buy high quality waste oil to diesel at competitive price, welcome to get more
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1. High-grade chest-piece made of light metal
2. Hand crafted solid stainless steel or zinc alloy chest-piece
3. Highly sensitive replaceable diaphragm for perfect hearing, tilt-resistant tube
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