Gulu la Chengyu ndi wopanga zoyesa zoyeserera. Kupanga pakupanga makina apadera oyeserera kwambiri padziko lonse lapansi, omwe ali ndi magwiridwe antchito apamwamba kwambiri, kudalira njira zoyesera kuyesera kuti mugwiritse ntchito makina owongolera makina ndikupeza deta yolondola. Perekani mitundu yosiyanasiyana ya kuyesa, kumatha kukhala tumile, kukakamiza, kumezedwa ndi kuyesa kwina kwamakina. Kutengera ndi kukweza-kwa cell, kalasi yoyenera ikhoza kufikira 0,5. Zachilengedwe, phokoso-lopanda zida.

Gulu la Chengyu lili ndi unyolo wathunthu ndipo wapeza chiphaso cha ISO9001. Okonzeka ndi malekezero omaliza anzeru a CNC, imatha kutulutsa zida zoyeserera ndi zida zosiyanasiyana. Kuchokera pakusankha zopangira zonse za zopanga, Chengyu oyendetsedwa mozama kuti tiwonetsetse kuti makasitomala ali ndi zinthu zabwino kwambiri. Zipangizozi zalandila matamando ochokera kwa makasitomala, ndipo yatumizidwa ku America, Europe, Southeast Asia ndi Africa, etc.,. Chengyu ndi mtundu wodalirika wa kasitomala wamtengo wapatali.