The dampproof masking liquid is easy to prepare, has low production cost, can greatly enhance the insulating property of the sealing wire holder and has good using effect.
本发明的防潮涂液制作简 单、生产成本低，可大幅度提高密封接线座的绝缘性能，使用效果好。
Wire line flexible pumping rod is a coiled rod with sealing wire line.
钢丝绳柔性抽油杆是一种特种密封钢丝绳的连续抽油杆。
Wire line flexible pumping rod is a coiled rod with sealing wire line.
钢丝绳柔性抽油杆是一种特种密封钢丝绳的连续抽油杆。
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