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jianhu kaitai petroleum machinery co., ltd. specializes in oil and casing operation, and is specialized in 13 special buckles and special materials. _the series of oil casings have particularly rich operating experience. with the gradual growth of the company recognized by the market, the company's customers cover several major oil and gas fields and gas storage warehouses at home and abroad. service hotline: 15950345481. _change skin color _comprehensive other _readings on this page

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