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High wear-resistant polyurethane mill jar has an excellent performance in electronic industry and battery material. It does not bring harmful impurities into grinding materials in working process, and ensures quality of the electronic products. TENCAN polyurethane mill jar is an integrated structure with magnanimous arc angle and thick jar mill. it is convenient to open and close over, and is sealed tightly with transparent body. PU mill jar is also hard and durable for use with its beautiful shape. Problems such as big gap, leaks, and dead angel of storage never appear in working process.