Longkou Haiyuan Yas Machinery Co., Ltd tsim xyoo 1999 yog tus kws tshaj lij kev lag luam hauv chaw tsim ua tiav tsis siv neeg PS cov thawv ntim khoom noj sai sai (cov khoom lag luam pov tseg) cov kab ntau lawm, PS ua npuas ncauj nqus dej tais (nrog qhov) ua tshuab, PSP ua npuas ncauj ntawv extrusion kab, EPE ua npuas ncauj daim ntaub (Cov paj rwb ua kom zoo nkauj) extrusion kab, Ua npuas ncauj txiv hmab txiv ntoo net ua tshuab, KT board cov cuab yeej, Laminating tshuab, lub zog txuag lub tshuab nqus tsev ua tshuab, Recycling granulator, thiab lwm yam.