DAIM PETROLEUM TSOOS DAIM DAIM DAIM KHAUB NCAWS XOOM KHAU RAU HAUV
1. Txhim khu kev qha rov qab siab sealing mechanism, kom lub ntws tsis kam ntawm xis mas slurry los yog slurry yog me me.
2. Lub rooj zaum valve thiab lub valve tub ntxhais ntawm cov roj hmab vulcanized tuaj yeem tiv thaiv kev xa rov qab ntawm cov cement slurry.
3. Txhua qhov ntawm sab hauv ntawm lub cev tuaj yeem nqus, thiab lub txav txav yog tib yam li ntawm lub vias lossis cov kab nrig.
Sau koj cov lus ntawm no thiab xa rau peb