Qingdao Krypton International Trade Co., Ltd ndi wodziwa kupanga zida zolimbitsa thupi. Kampaniyo idakhazikitsidwa mu 2012 ndipo yapanga kanyumba kakang'ono kupita ku fakitale yayikulu yamakono yokhala ndi makina otsogola. , mabenchi athyathyathya ndi osinthika, Mabampu mbale ndi ma barbell, dumbbells ndi kettlebells, makina osungira ... etc.