Tianjin Rishengyuan Glass Technology Co., Ltd has engaged in the glass industry for 30 years. After continuous improvement and optimization, the company has manufactured the best quality and design slings in China. The slings utilize high-intensity polyester tread as the bearing core, and add high-tech materials in the inner glass contact area as the anti-cutting layer. Also, it originally creates the R-angle full-steel plate base which can be used in the lifetime. This design product conforms to mechanics principle to distract weight with perfect details. It weighs 9 kilograms heavier than the same products and has more than 2 times longer service time. The company has already applied for national patent protection (Patent No.201430200860.0) and is underwritten by Pacific Insurance Corporation.