A na-anakwere usoro ihe nkwekọ nke spral welded pipe ugbu a, na esemokwu static, mpaghara kọntaktị n'ezie dabara na ibu ahụ. Na mgbe esemokwu na-amị amị, anyị ga-atụle ọnụnọ nke ike shiee, mgbe ahụ, na-abawanye nchara nchara n'ezie mpaghara kọntaktị sitere na nkịtị l ...
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