Customers from Sri Lanka came to visit our boiler production base for the second purchase, because their new factory will need one set 2ton steam boiler, we recommend the WNS series fire tube three pass structure boiler, thermal efficiency up to 99%, automatic running boiler. If you interest, contact us for more info here: Tel/whatsapp/skype: 0086 18236986701 Email: service@yuanda-boiler.com