Aviation Obstruction Light for Communication Towers. Poly Qual India Private Limited is an ISO 9001:2000 certified company. The Aviation Obstruction Light for Communication Towers is based on LED technology. These lights are precision designed for the telecommunication and GSM towers. These are durable, easy to mount products, featuring shock & vibration resistant attributes. Poly Qual India Private Limited supplies these lights as per the specifications of the clients. Salient features of Aviation Obstruction Light for Communication Towers are as