The founder and director of the company, Xiaomei Wang Lin, began her activities in Hardware and Locksmith products at the side of her husband Tomás Rafael García Alpízar. As a master locksmith, with more than 40 years' experience, he has helped lock and key manufacturers introduce improvements in their designs, such as double anti-picking pins and stainless steel, welcome improvements since before, they could be opened easily, even those considered more dificult, with seven pins.
The idea for this business occurred when both realized the limited quantity of brass keys available in Spain, thus they thought to create a company where they themselves could fabricate and distribute keys under the brands J M - J M K, available in brass, aluminum, and in various colors.

Together they have built a company that, thanks to its team of hard-working professionals, has become a leader in locksmith products, with a complete catalog of first-quality products adapted to the needs of its clients.