- Danyang Tongyu Tools Co Ltd
Specialized in all kinds of HSS twist drill bits, electric hammer drill bits ,masonry drill bits, wood working drill bits & more.
http://www.tongyutools.com/
- Hangzhou Dese Technology Co. Ltd
Are specialists in producing drill bits, drill pipe, screwdriver bits, bits set, hammer drill sets, glass drill bits, twist drill, tube & sheet drill, step drills and more.
http://www.dese-drill.com/
- Wuxi Geotec Geological Equipment Co Ltd
Specializes in producing diamond drill bits, core barrel tools, core drill rods, wireline core drill parts & more.
http://www.coredrillchina.com/
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