About 3 Trademarks found that are owned by Shenzhen Yishangju Technology Co Ltd

Puppets; Swings; Trampolines; Amusement devices, namely, bounce houses in the nature of an air inflated cushion in an air inflated structure; Dolls and doll accessories, namely, clothing for dolls, doll rooms, doll beds, doll houses, toy fabrics and linens for dolls and strollers for dolls; Jungle gyms; Play swimming pools; Playground sand boxes; Playground slides; Ride-on toys and accessories therefor

Barbells; Dumbbells; Kettlebells; Body-training apparatus; Exercise equipment, namely, plyometric boxes; Exercise trampolines; Fitness machines and equipment, namely, weights, treadmills, rowing machines, stair stepping machines, resistance machines, stationary cycles; Sporting goods and equipment for speed training, namely, rings, cones, speed ladders, coaching sticks, training arches, ankle bands, resistance chutes, hurdles; Surf boards; Weight lifting benches

The wording Whambam has no meaning in a foreign language.