KeKan Marine Technology Co., Ltd. Is in Yantai, China' s national economic and technological development zone. from the R& D, manufacturing, and sales of marine observation detection equipment to the instruments and meters, intelligent frequency conversion water supply equipment, underwater robots, outer wall clean robots, and meteorological equipment. Our company' s products have applied for over 30 patents and software copyrights are widely used in various industrial fields and have won the trust and affirmation of more than 500,000 customers.