午夜国人精品av免费看,www.久久91,国产成人精品91,成人综合一区,久久久久久97,91精品成人久久,国严精品久久久久久亚洲影视

The quality & inspection centre of the factory is equipped with various kinds of high-precision analytical instruments.In the meantime,according to th requirements of ISO9001:2000 Quality System,high-quality specialized personnel of chemical analysis are assigned to monitor and inspect all the raw materials,auxiliary materials,intermediates as well as finished products to provide clients with reliable quality guarantee.

Our spirit is quality first and credit supreme.