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About the company-HEJIAN YINHAI ROCK BITS MFG.   YINHAI Location: -The company is located in Junziguan Industrial District, Hejian city, Hebei province, where there is the main source of rock bits manufacturing and distribution of China and is only 200km from Beijing Capital International Airport. YINHAI Business/Market: ---We are a 100% factory(manufacturer) of tricone bits (both Steel Milled Tooth and Tungsten Carbide Inserts Bit) from 3" to 20" & PDC drill bits from 3 1/2 to 17 1/2 inch, with 12 years' experience of producing new drill bits. ---We have passed factory audit by SGS.  All of drill bits are strictly according to API standard. ---We are competent to design and produce the drilling tools like single roller cutters(cones),hole openers and other customized bits depending on the utility demand. ---YINHAI bits have been being sold well and running stably in many areas, such as: the United States, Canada, Chile, Poland, France, Saudi Arabia, Egypt , Singapore and Russia and so on. ---There are technical research team, production management team and professional sales team in our company to serve our customers. ---We adhere to the principle of " Win the customer by attractive quality and price" and "Create value for customers by professional technology and experienced service".   YINHAI Market/ Business: We have many VIP customers from Africa, Europe,  and America, including India, Pakistan, and Singapore, who order drill bits in bulk from our company every year. Our bits have been being sold well and running stably in Europe, Africa, and America. They all like our drill bit very much. We are 100% factory directly sales, API production process guarantee, Provide customized services for brand processing. Factory best price and quality and service, Reduce the cost of drilling for you. Welcome to book a video-call to inspect factory.   A:We can supply Drill Bits directly to save your time &money. Reduce the cost of drilling for you. API production process guarantee,Provide OEM services for you. Worry free after-sales service.Welcome to book a video-call to inspect our manufacturing factory.