
Qingdao preco imp. & exp. co., ltd. is currently expanding the business quickly in China and foreign countries. PRECO is mainly engaged in the business of countersink bit and other product series. spiral point tap owns advantages of spiral cutting tool. It is processed in strict accordance with relevant industry standards and is up to the national quality control standards. PRECO has been verified by world-leading inspection company. The surface coatings prevent it from directly contacting with the harmful medium.

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