Is there any smoke during the combustion process of the biomass wood pellet stove?

I believe everyone wants to know, does the wood pellet heater indoor emit smoke during the combustion process? For environmental reasons, this is an issue worthy of attention.
1. According to data from our sales department, EU countries are vigorously promoting biomass wood pellet stoves because they are among the new biomass energy sources and can alleviate the shortage of traditional energy sources. Another important reason is that biomass wood pellets do not burn during the combustion process. Smoke will be produced. The exhaust gas will only be discharged to the outside through the smoke pipe during the combustion process.
2. However, one thing needs to be explained. When the wood pellet stove is ignited, a little smoke will be produced during the ignition of the wood pellets, but it will be discharged outside through the chimney of the pellet fireplace. This process will last about 3-5 minutes.
3. When the pellet stove is completely ignited, the smoke will disappear, because after the pellet stove is fully burned, no smoke will be produced. What is emitted to the outside is only the exhaust gas produced after combustion.