Plane mirror is a common optical element, which is widely used in aviation, satellite, laser, medical instruments and other fields. High-end applications include optical communication, lidar, optical lens and other fields. In terms of materials, the commo
Mama Bottle is a water cup specially designed for pregnant women and postpartum care. Mama Bottle designs water scale lines for each time period according to the physiological water needs of pregnant women and puerperae in one day to guide pregnant women
fire safety doorThe purpose of a fire safety door is to hold back smoke and contain fire long enough for the occupants of a structure to escape. It is USA standard , popular sell in USA market.
Lactic Acid standard is produced from natural corn starch by advanced bio-fermentation and refining technology. The lactic acid is a yellowish to colorless liquid, having a mild acid odor and taste.
1.Casement Window : swing in and out when close and open.2.Sliding Window : sliding on both top and bottom tracks.3.Awning or Top Hung Window : swing in & out operated by a crank.4.Fix Panel or Corner Fix Panel : cannot be opened.