九九福利国产精品日韩精品,免费在线黄网,国产成人精品2021欧美日韩,美女教师一级毛片,黄片视频免费观看污,欧美日a级视频黄免费,婷婷五月黄色网站

Zhengwei lifts and flips the reactor, the cover is lifted, the body is flipped, and it is easy to discharge. It is an ideal device for research institutes and research institutions.

The kettle body is made of pure stainless steel, which is beautiful and generous. According to customer requirements, PTFE, PFA, PPL and other anti-corrosion coatings can be sprayed inside, and PTFE inner sleeves can be inlaid in the kettle.