Six Crystal Technology, which was invested by the Entrepreneurial Relay Fund, was officially listed on the New Board on March 10.

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With the implementation of the new environmental protection law in 2014 and the convening of the two sessions in 2015, aquaculture pollution, ecological farming and environmental issues have been repeatedly mentioned and emphasized. In 2015, it will be the first year for the reform of enviro…

Leakage of valve body and bonnet 1. The casting quality of cast iron parts is not high, and there are defects such as sand holes, loose structure and slag inclusion on the valve body and bonnet body.

3. Poor welding, there are defects such as slag inclusio…