The three big bicycle producers in Indonesia are PT Insera Sena of Suryanto Wijaya based in Sidoarjo, East Java Province; PT Terang Dunia Internusa of Stephen Mulyadi based in Jakarta; and also PT Wijaya Indonesia Makmur Bicycle of Hendra Widjaja based in Surabaya, East Java Province. Today, we’ll have a look at PT Insera Sena the producer of Polygon bicycles.To subscribe please click here