Site na mmepe nke ọha mmadụ, ngwa nke flange pipe fittings na-abawanye ụba, yabụ kedu ihe teknụzụ nhazi nke SO flange? A na-ekewakarị n'ime ụdị teknụzụ anọ, ihe ndị a ka ị kọwaa n'ụzọ zuru ezu. Nke mbụ ejiri scrap pin training embrayo, obere co...
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