亚洲无码韩国电影大陆_国产冒浆激情高潮进出视频_亚洲高清激情精品一区国产_国产午夜成人精品免费网浪潮_人妻无码精品一区二区三区99

The company has its own new product research and development center in Lugu, Changsha, Hunan Province, the center covers an area of 1500 square meters, more than 100 sets of experimental equipment, the total value of 8 million yuan equipment, technical staff of 35 people. R & D center has developed more than 30 new products, apply for 11 national patents , access to 2 national authorized patents。