42 Oilfield services, namely, custom design of oilfield equipment; Custom design of oilfield equipment and industrial applications, namely, boom trucks, force feed trailers, hose carts, booster pumps, delivery hoses; Design for others of gas field equipment and industrial applications, namely, boom trucks force feed trailers, hose carts, booster pumps, delivery hoses; Custom design of gas field equipment and industrial applications, namely, boom trucks, force feed trailers, hose carts, booster pumps, delivery hoses