Double Doors Shoe Heel Metallizing Plant Machine quotation Our History We Longkou Bite Vacuum Technology Co.,Ltd----LKBT, established in 1985, LKBT team focus on R&D of vacuum pvd coating machine with more than 30 years experience, we also have branch company use ourselves manufactured pvd machine to offer pvd coating service in order to get the best coating recipe to share with every LKBT...