We developed the technique of steel-plastic combination, injection with vesicant, We first put these technique into practice, which fills up a gap in China. We successfully get dozens of patents. Our yearly capacity has reached one million pieces. We have exported our products to Europe, Japan, East Asian area and many other countries. Our products are up to the requirements of environment and the standard of GB/T15234-94. In some index, we follow the satandard of Europe, USA and Japan. Lika has successfully passed the audit of SGS ISO9001: 2000.