Jinan Zhengtongda Equipment Co., Ltd was founded in July 2000, it is a privately operated high new technical technology enterprise, engaged in the production/research/development/sells high and middle grade insulating glass process equipments. Since set up, we have made intensive research and development in the field of insulating glass processing, and processed perfect technology system and high independent R&D ability. Meantime the company established the complete sale and after-sale service