国产第一网站|亚洲理论在线观看|在线高清av|每日更新在线观看av,亚洲色图丝袜,精品久久久99,亚洲天堂黄色

In the R&D center, we equip with all facilities necessary for the research and product development, these equipment include: various chemical, optical and physical measuring instrument, two roll mills, brabenders, lab extruders, congo red test machine, all sorts of mixers, ovens, all sorts of instruments for test of raw material property and performance etc..