Mechanical and electrical pressure measuring apparatus, namely, pressure gauges, high pressure manometers, thermometer and vacuum measuring apparatus; pressure gauges; thermostats, [ time switches, relays; ] electric and mechanical leak detection monitoring apparatus, equipment, and instruments for detecting and measuring two-dimensional distribution [ of force and ] pressure; hygrometers; computer component testing and calibrating equipment; charging appliances for rechargeable equipment; scales for weighing stored gases, and parts thereof, namely, cylinders; Hand tools and implements, namely, pipe-bending and cutting apparatus, flaring tools, clamping tools and fittings therefor; Gas pumps; vacuum pumps; replacement parts for gas pumps and vacuum pumps; filters for air and liquids, for motors or pumps or engines; Valves and fittings of metal for pipes, namely manually operated metal valves, fittings and joining flanges; Packing materials, namely, materials for forming seals and encasing other material, and insulating materials, namely, polyurethane foam and polyethylene foam; flexible pipes, not of metal; [ weather-stripping compositions, materials and goods, namely, polyurethane foam and polyethylene foam, and weather-stripping for use in industrial premises ]; [ Metal tempering preparations and soldering chemicals; ] adhesives used in leak detection; refrigeration chemicals; chemical preparations in the nature of filtering materials in leak detection; chemical leak sprays for displaying line leaks; Ultra-violet detection lamps; filters for air and liquids for industrial installations, soldering lamps; Engineering, research, material testing and quality control for vacuum technology for others; research on [ building construction incorporating ] vacuum technology; engineering; technical consultancy in the field of vacuum technology
