求翻译：10、中国电力铁塔产品有10kV、35kV、110kV、220kV、500kV等等级，生产许可证分为三等级：110kV、220kV、500kV，高等级覆盖低等级。本公司具500kV生产资质。110kV及以上主要线路工程本公司近三年加工生产的有近70条线路。一个新产品（新塔型）本公司在黑件加工完成镀锌之前均需要试组装，试组装采用卧式组装，在本公司试装场进行，主要检验该塔各零部件是否安装就位、各主要尺寸（如上下口宽、横担间距等）是否满足设计院提供的图纸的要求。是什么意思？

10 China Power Tower products 10kv, 35kv, 110kv, 220kv, 500kv and other grades, the production license is divided into three levels: 110kv, 220kv, 500kv, high-grade coverage of low-grade. The Company with the 500kv production qualification. 110kv and above the main line project in nearly three years

Eiffel Tower 10, China Power Products, 35 kV kV 10 , 110 , 220 kV kV kV, etc. , at 500, the production license is divided into 3 levels: 110, 220 kV kV kV, 500 high-level coverage, low-grade. The company has 500 kV production quality. More than 110 kV main line construction and the company nearly th