As Dr. S. Kalyanaraman says Trade is a way of social interaction where people exchange goods. He goes on to give a detailed account of the seals and pictographs that decipher this aspect of Sarasvati -Sindhu Civilization. There is ample evidences for long distance trade transactions with India as centre point, the focus was on the Ancient maritime Tin route. The seals signify the metal trade ways of Meluha people through hieroglyphs depicting the Tin trade route of Bronze Age. The Meluhan merchants used the technology and wealth resources to trade across long distances. The goods were easily portable via navigable rivers like Sarasvati to sea with multiple ports along the way from western shores of India to Mesopotamia, right upto Israel. The breath taking discovery of Ayn Sukhna dated to 1900 BCE by a French marine archeology team establishes links of Kerala boat builders with Arabian gulf up to Egypt, the vessels that could carry upto twelve tons of goods. The Indus script narratives reveal the advanced metallurgical technology via seals, the copper metal infusion. The Harappan seals show silversmith and metal infusion that signify Alloy metals manufacturing. Similar activity is shown on a brass seal from Greece pictographs too that are actually text messages. It is wonderful to note how this language evolution took place, a unified language with different dialects. The metal ores, gems etc. were used as tribute by Meluhan merchants to traders in distant lands. So the trade contacts across seas and highly advanced technology and metal infusion are clearly evident through the hieroglyphs.