Qingdao bestech machinery Co., ltd yog cov kws tshaj lij ntawm kev tsim cov tshuab txau thiab tua phom tua tshuab nrog ntau tshaj 20 xyoo, peb cov khoom tau raug xa tawm mus rau ntau tshaj 90 lub teb chaws thiab yeej lub koob npe zoo.
Peb muaj cov pab pawg muaj zog thiab peb tuaj yeem muab cov kev pabcuam tshaj lij rau peb cov neeg siv khoom.