Abstract: An anti-diffusion substrate structure includes a substrate, a substrate circuit layer, and a chip. The substrate has multiple through holes. Within each of the through holes includes a first metal layer and an anti-diffusion layer plated on the first metal layer. The anti-diffusion layer is an Electroless Palladium Immersion Gold (EPIG) layer or an Electroless Nickel Electroless Palladium Immersion Gold (ENEPIG) layer. The substrate circuit layer is mounted on the substrate and extended on the anti-diffusion layer within each of the through holes. The substrate circuit layer is made of a second metal layer, and a composition of the second metal layer is different from a composition of the first metal layer. The chip is electrically connected to the substrate circuit layer. The anti-diffusion layer is able to better prevent material of the first metal layer from migrating or diffusing to the second metal layer.

Abstract: A life jacket has two head air bags, a plurality of shoulder air bags, a zipper disposed between the head air bags, and a plurality of pockets. Each of the pockets receives an inflated bag. A safety pin is disposed on the inflated bag. An air inlet hose is connected to the corresponding shoulder air bag and a pressing ball. Each of the head air bags has a hook-and-loop type fastener.

Abstract: A life jacket has two head air bags, a plurality of shoulder air bags, a zipper disposed between the head air bags, and a plurality of pockets. Each of the pockets receives an inflated bag. A safety pin is disposed on the inflated bag. An air inlet hose is connected to the corresponding shoulder air bag and a pressing ball. Each of the head air bags has a hook-and-loop type fastener.

Abstract: A life jacket has a plurality of shoulder air bags, a zipper disposed between the shoulder air bags, and a plurality of pockets. Each of the pockets receives an inflated bag. A safety pin is disposed on the inflated bag. An air inlet hose is connected to the respective shoulder air bag and a pressing ball. Each of the shoulder air bags has a hook-and-loop type fastener.

Abstract: A mold assembly has an upper positioning seat, an upper panel disposed in the upper positioning seat, a lower positioning seat, a lower panel disposed in the lower positioning seat, a first air cylinder disposed on a side of the lower positioning seat, a second air cylinder disposed on a bottom of the lower positioning seat, a third air cylinder disposed on a side of the upper positioning seat, and a fourth air cylinder disposed on a top portion of the upper positioning seat. A lower plate is disposed on a bottom of the upper panel. An upper plate is disposed on the lower panel. The lower plate engages with the upper plate.

Abstract: A replaceable elastic air cushion shoe structure includes a sole, and a vamp. The sole has a top provided with a plurality of oblique conical locking grooves and having a periphery provided with a plurality of waterproof ribs. The sole has a periphery defining a plurality of locking recesses each provided with a catch piece. The vamp has a bottom provided with a plurality of oblique conical locking blocks each locked in the locking groove of the sole. The bottom of the vamp defines a plurality of waterproof slots for receiving the waterproof ribs of the sole therein so that the vamp is integrally formed with the sole. A plurality of U-shaped snapping pieces are each secured in the bottom of the vamp and each have two sides each provided with a hook.