Hi this s Milan from Bangalore, I am using pulser 150cc bike from last 2 years, in every month I am outside from Bangalore nearly about 1000 to 1500 KM , speed of 80 to 90, while traveling I getting valve sound in every 70KM , so please suggest me what to do? And on that time could I continue journey or stop ? ???

You mean when you are at speed of 70kmph you get such sound. Can you describe it a bit more, how you know it is valve sound ? May be it is a valve lash, simple valve adjustment can fix it but can be also timing chain issue.