The flat ear stud base can diy your favorite ear studs, you can put pearls, crystals, agate, etc. any stone you want. Cheaper price, simple operation, multi-size base, multi-color can choose. Come show your ideas.
It is made in special hot furnace, with plate glass and inorganic colorant as the main raw materials. Specific heating procedure and annealing curve are set beforehand, then the glass is annealed after being heated above the softening point of the glass t
The Bench top horizontal laminar flow hood is a highly versatile local purification equipment, which is widely used in laboratory, electronics, national defense, precision instruments, meters, pharmaceuticals and other industries.