In the presence of phosphoric acid thiophene and acetic anhydride reaction, put the acetic anhydride, 85% phosphoric acid and thiophene into the reaction pot, stir, gradually heated to reflux
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Xinxiang Jinxing Tradings Co., Ltd: Productos de protección contra la radiación, protección de radiación de tungsteno, material de implante de titanio, Stellite ASTM F75 / ASTM F1537, barra de cobre
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Tianjin Pioneering Machinery: Основанная в 2005 году, Tianjing Pioneering Machinery является крупнейшим производителем и экспортером низкоскоростных машин для производства табака. Мы производим более
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Wholesale high quality and durable chunky space dyed 100% polyester chenille yarn for knitting blanket for sale here with Haite Fashion. We're one of the leading and professional hand knitting yarn
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Kenneth is one of the most professional PVC hot mixer manufacturers and suppliers in China. Our factory offers customized PVC hot mixer made in China with competitive price. Welcome to buy.
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CONTACT ADHESIVE is all-purpose neoprene based. Contact adhesive with high immediate bond strength, good brushability, and heat resistance.
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