Shenzhen Bai Shi Ke Ni Technology Co., Ltd. Established in 1997.It'san electronic lock R & D, manufacturing, high-tech enterprises.BQ is our own brand,during the 19 years, we have been working closely to Texas Instrumet company ,we use their chip developed electronic lock.Especially in the low-power, our technology and the world-renowned electronic lock manufacturers such as KABA, vingard, sallock competition. in the same time , We also OEM some USA brand lock for the U.S. market.In 2011, we have set up a part of the national offices of the East Coast of United States.If you are interested in our company and our lock ,welcome to you Contact us ,Look forward to better cooperation with you ~