121/4" HM 952XAG Shaanxi Hainaisen Diamond Bit Pdc fornitori pozzo di petrolio Pdc punte di perforazione

punta da trapano Imposta bit Cina in carburo di tungsteno drill bit rock trapano punte pdc punta diamantata


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卖方: SHENZHEN PORSTAR ELECTRONICS CO LTD
卖方: SHENZHEN PORSTAR ELECTRONICS CO LTD
卖方: SHENZHEN PORSTAR ELECTRONICS CO LTD
卖方: SHENZHEN PORSTAR ELECTRONICS CO LTD
卖方: SHENZHEN PORSTAR ELECTRONICS CO LTD