... a large order, we will help you ship goods by sea, and we are very experienced to handle with ... Ball, Tube, Spring,Type Vibration sensor switches /Roll ball tilt switches /Optical roll ball sensor/ Mercury switchesFinish Nickel-plated, silver- ... bag, inner small boxer, outer carton box, and advised by customer.Certification ISO9001:2008, and ROHsEquipmentsTechnology Experienced engineers ,technicians ...