The utility model relates to a corundum sieve tube used in the field of oil field and oil well production.
本实用新型涉及油田油井开采领域中用到的一种刚玉筛管。
2
The utility model discloses a preserved beancurd zymosis sieve, which belongs to the technical field of food processing equipment.
本实用新型公开了一种腐乳发酵筛，属于食品加工设备的技术领域。
3
The invention relates to the technical field of composite materials, and provides a molecular sieve based composite material for purifying phosphorous acid and a method for preparing the same.