Enviro Infra Mauka or Dhoka?

Company generates more margins than the competitor, company’s cash conversion cycle is negative while other competitors have it more than 200 days. Management says we design the projects by our own and don’t sub contract them. Company had a revenue of around 100 crores in FYE’21 which will be growing to around 1,000 crores in FYE’25 so revenue has grown around 10 times in 5 years and management is guiding 30% to 35% growth for next 4 to 5 years. All of these numbers and story seems like a wow, but if I play a role of devil’s advocate these numbers seems too good to be true.