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About product and suppliers:
        Alibaba.com offers 6,368 pi material products. About 6% of these are insulation materials & elements, 1% are steel pipes, and 1% are packaging boxes. 

A wide variety of pi material options are available to you, such as composite polymer, steel, and fiberglass. You can also choose from waterproof, flame retardant. As well as from free samples, paid samples. 

There are 6,368 pi material suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of pi material respectively. 

Pi material products are most popular in North America, South America, and Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,732 with ISO9001, 586 with Other, and 552 with ISO14001 certification.