We mostly use Indonesian pine, mahogany, teak, birch, or beech, in our products. Our Indonesian pine is harder than many other softwoods, harder than American or European pine, also harder than European Linden. The hardness of Indonesian pine is similar to birch wood. So, although its coniferous leaves make it classified as softwood, our Indonesian pine is durable and strong. Please see the comparison in here:
Sumatran pine wood - https://www.wood-database.com/sumatran-pine/
Eastern White Pine (pine which widely grown in eastern north America) - https://www.wood-database.com/eastern-white-pine/
European Linden - https://www.wood-database.com/european-lime/
European White Birch - https://www.wood-database.com/downy-birch/