large diameter boring bars Our brand - PRECO has achieved worldwide recognition, thanks to our staff, quality and reliability, and innovation. For the PRECO project to be strong and consolidated over time, it is necessary that it be based on creativity and providing distinctive products, avoiding imitation of the competition. Over the company’s history, this brand has gain numbers of awards.
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PRECO large diameter boring bars Qingdao preco imp. & exp. co., ltd. designed large diameter boring bars not only based on functionality alone. The appearance is as important as its usability because people are usually attracted by the appearance first. After years of development, the product not only has the functionality that meets the application needs but also has the appearance that follows the market trend. Being made of durable materials, it also has a relatively long service life for long-lasting performance.tile drill bit,core drill,metal drill bit.