Beijing Konfitex Technology Co., Ltd: We're known as one of the most professional radiation shielding fabrics, metal fiber yarn, metal fiber fabric, conductive yarn, conductive fabric manufacturers
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Shenzhen Edisound Automation Equipment Co.,Ltd: Edisound is professional for design exclusive proposal as per customers' requirements and manufacture&install all kinds of production lines and clean
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Shenyang Yafei Economic Trade Co., Ltd: Specialized in ophthalmic instruments more than 10 years, production and sales integration. Accept customized services. High quality by old and new customers
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Yangzhou Chuntao Accessory Co.,Ltd.: As one of the leading sport headwear collection, street headwear collection, vacation headwear collection and special headwear collection manufacturers and
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ASTM A53. ASTM A53 is a carbon steel alloy, used for structural steel pipe. The alloy specifications are set by ASTM International, in specification ASTM A53/A53M[1].