The present invention provides a metallization process of in-situ forming titanium nitride and tungsten nitride in a tungsten plug. The selection block selects an output signal of the first delay unit in a high-speed operation mode and selects an output signal of the second delay unit in a low-speed operation mode. The device may be mounted to a vehicle using the magnetic attraction of the device or installed in a more permanent manner using threaded fasteners. 0 or lower and a b*value of a colour on reduction is 1. A system for controlling pressure in the vapor or ullage space of an underground storage tank of volatile liquid fuel is also described. The digital pass may be sharable from an existing user’s user device to a new user’s user device.