We have done comprehensive tests for our sling rings, such as deformation, bleach test, and washing process test. The official break test is performed as well by National Quality-Control Center. Two rings are tested, together with a Nylon ring available in market, and a normal plastic ring. Nylon is chemically very stable, and suitable for washing, behaves better than most common plastics especially after exposure to sunlight. Some of our test photos and the official certificate are shown below.

Deformation Test shows that our rings start to deform for a load larger than 220KG, but does not break.

Break Tests show that our ring can hold a load up to 300KG without breaking. In fact, the ring breaks roughly at 500KG.

Bleach test that simulate the washing process in ordinary life shows that our ring hardly change its colors.

The official break test was performed by National Quality-Control Center. Two Kiumibaby rings were tested, together with a Nylon ring available in market, and a normal plastic ring. The test report is shown below. Both rings break at a load over 500KG. The original test report in chinese is here.