Yantai Haoyang Machinery Co., Ltd. founded in 1980s, have been manufacturing slewing bearings for more than 20 years. The diameters of the race track of slewing bearing range Φ200mm~5000mm. In January of 2013, Haoyao brand was awarded as Shangdong Famous Brand title.
Yantai Tiancheng Machinery Co.,Ltd. founded in 2015, specializes in wind turbine slewing bearings. With an investment of $59 million, we are equipped with the best equipment and quality management system. As a sister company of Yantai Haoyang Machinery Co.,Ltd.,we carry on their experience in design, manufacturing, quality controlling, etc. Now we are trusted by our customers for our world-class design, exquisite craftsmanship and quality assurance system.
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