Scrap metal disassembling industry in Ziya town of Jinghai county and its surrounding area can be traced back to the early 80's of twenty century, after the rapid development in middle 90's, it has gradually form into a secondary resource manufacturing and processing economic with regional characteristic.

Ziya Environmental Protection Industry Garden of Jinghai ,was established in Nov.20, 2003,is one of the most important import scrap metal disassembling district after Ningbo Zhenhai and Taizhou, there are 43 AQSIQ approved enterprises located and 20,000 employees engaged in scrap metal recycling industry, The annual dismantling volume amounts to 1 million tons,thus making Tianjin the biggest distributing center of nonferrous metal in North. China.The garden mainly concentrates on scrap metal disassembling and metal deep processing which is supported by the department of province, city environmental protection and the custom, so as to remedy the domestic resources insufficiency, promote domestic integral level of the resources recycle and utilization, promote the industrial economy to develop in harmony and make contributions continuously, promote the development of economy of Jinghai.