Abstract: A method for manufacturing a sterile bio-ink includes providing an extracellular matrix composition, and the extracellular matrix composition being in a liquid state; adding an animal-based gel and a plant-based gel that are freeze-dried, re-dissolved, and filtered to the extracellular matrix composition, and mixing the extracellular matrix composition, the animal-based gel, and the plant-based gel to obtain a gel mixture; and centrifuging and degassing the gel mixture to obtain the bio-ink.

Abstract: A gas cooking device comprises a burner, a gas feed tube, a control valve used to control a gas flow, an electromagnetic generating device capable of generating an electromagnetic signal, and a control unit capable of controlling an opening size of the control valve according to the electromagnetic signal. The control valve and the electromagnetic generating device are electrically connected to the control unit respectively. By employing the control valve, the control unit, and the electromagnetic generating device, control of a flame size of the gas cooking device can be realized.

Abstract: The present invention provides an automatic constant temperature cookware utensil, which includes a utensil body and a utensil bottom. A constant temperature layer is provided on an outer surface of the utensil body and/or the utensil bottom. Compared with the prior art, an automatic constant temperature cookware utensil of this invention has a bottom with constant temperature, which has good safety performance, protects food nutrition from destroying, effectively restrains oil and smoke, and decreases PM2.5.