The company's factories are located in Guangdong Province of China, and employ over 3000 workers.
At the beginning of the 1980s, Welly mainly produced die-cast toy cars roughly 3 inches in length (approx. 1:64 scale). 4.75 inch die-cast toy cars (approx. 1:38 scale) were added later that decade. In the 1990s, the company developed 1:24 scale models, then added 1:18 scale ones.
Welly recently established a research and development department, and began to developing different ranges of radio-controlled models, including 1:32 scale die cast cars and trucks, and 1:12 scale plastic RC cars.
Welly reproduces Russian cars in 1/34 and 1/60 scales only for the Russian market.
In South Korea, Pino B&D and Innocean sell 1:38 Hyundai & Kia diecasts.
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