Qhov txawv ntawm J-Type Anchor thiab L-Type Anchor yog dab tsi?
Thaum txhim kho cov tsev, txuas hniav, lossis cov cuab yeej siv tshuab, tej zaum koj yuav ntsib teeb meem ntawm kev xaiv ko taw bolt. Hauv cov txheej txheem no, koj tuaj yeem xav txog qhov sib txawv ntawm J-hom thiab L-hom thauj tog rau nkoj bolts. Raws li ib tug ua hardware fastener chaw tsim tshuaj paus nyob rau hauv Chin ...
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