Ob chav -kawg sib tsoo tshuab tau dav siv nyob rau hauv ntau qhov kev lag luam, suav nrog tsheb, cov kabmob, thiab cov khoom sib nqus, vim lawv qhov siab precision thiab ntau lawm efficiency. Lawv tsim nyog rau kev ua ntau yam ntaub ntawv, xws li piston pins, piston rings, valve washers, txuas rods, cross shafts, valve daim hlau, hloov diav rawg, hydraulic twj tso kua mis, rotors, stators, compressor vanes, bearing puab thiab sab nrauv rings thiab chais, thiab sib nqus rings, sib nqus hlau daim hlau kev lag luam.
Nyob rau xyoo 1950, thaum Soviet Union tau muab kev pabcuam rau Tuam Tshoj, nws tsim cov kab rov tav thiab ntsug ob npaug -kawg sib tsoo tshuab tshwj xeeb rau kev sib tsoo piston rings. Tom qab ntawd, raws li cov yam ntxwv ntawm cov kabmob rings, Suav cov kws tshawb fawb tau tsim ob -kawg sib tsoo tshuab tshwj xeeb rau kev sib tsoo bearings. Ntau lub tuam txhab loj hauv Hunan, Shanghai, Shijiazhuang, Hangzhou, thiab Rushan tau tsim cov tshuab no, tab sis lawv cov qauv sib txawv, txhua tus muaj nws tus yam ntxwv. Nyob rau lub sijhawm no, ob npaug -kawg sib tsoo tshuab tau ntsib kev loj hlob sai hauv kev lag luam bearing.
