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LEDE is committed to providing customers around the world to provide high quality products, in accordance with international standards. Ductile iron pipe trench, LEDE has been a number of international quality assurance agencies like FM and UL certification. LEDE`s products are also with international standards, such as ANSI, ASTM, DIN, BS and so on. In addition, the mechanical tee and machinery went up to national design patents.
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