Lena yi-Qinhuangdao Sino-ocean Marine Equipment & Machinery Co., Ltd., esebenza ngokukhethekile ekuhlinzekeni ngezinsizakalo zokuma okukodwa ezimbonini zasolwandle.I-Sino-ocean Marine ingahlinzeka nge-assy ye-valve yokukhipha amandla enjini enkulu okuhlanganisa:i-valve spindle/isihlalo, izindlu zevalvu yokukhipha umoya, isilinda somoya kanye...
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