国产在线看片无码成人精品_国产亚洲精品无码视频_亚洲人毛片免费精品_一日本道久久久精品国产_久在线免费看成年人视频_在线观看播放国产欧美_色综合久久精品国产乱码专区_亚洲精品无码天堂av_一级毛片免费看高清视频在线_97人妻资视频源网站

On April 29, 2001, the scientific and technological appraisal under the auspices of the State Bureau of Petroleum and Chemical Industry showed that SZ-97 vacuum coating oil "fills the gaps in the country and ranks the leading level in China".

July 1, 1997, after more than four years of painstaking research and testing, by our researchers independent development of the vacuum coating coating (oil) was finally developed successfully, and put on the market. From then on, the domestic market broke the situation that the coating oil mainly relied on imports. In order to commemorate this extraordinary day, our company officially named this product: SZ-97 vacuum coating paint.

In 1993, the company's original diluent DA water, which is compatible with imported coating oils, enjoyed a good reputation in the Pearl River Delta, and started the development of vacuum coating oil series products.