Harbin Dadi Bearing Factory is beside the Songhua river where the A zone of the car components in Pingfang district Harbin City. It was founded in 1999 and the registered trade mark is HDD. The required floor space of Harbin Dadi Bearing Factory is 11000 square meters and the building area is 5000 square meters. Harbin Dadi Bearing Factory is a bearing producing enterprise which the main products are the tapered roller bearing, self-aligning roller bearing self-aligning spherical roller bearing，double row and self-aligning spherical roller bearing， single row . It also can produce various non-standard and specialize bearing which according to the needs of customers. The annual of year value is 6 million. The bearing of HDD brand is performing the <> strictly and it was awarded the advanced private enterprises and the top 10 private enterprises by the district government in 2000 and 2001.