After ten years of accumulated precipitation, Woshiyuan has a long-term planning, adhering to strive for development of industrial aluminum profiles accessories, pipelinefittings and other items.
历经十多年的积累沉淀，沃士源长远规划，秉承锐意研发工业铝型材配件、流水线配件等项目。
2
Proper functioning is only assured if suction pipeline, fittings and pump are tight.
只有在泵与吸入管及附件紧密时才能确保其功能。
3
Basic knowledge of polyethylene material, pipe fittings specifications, pipeline construction specifications, technical points, management experience and design parameters.