ผลิตแม่พิมพ์รีดเกลียว ซ่อมแซมแม่พิมพ์ และดอกสว่าน OSG has strived to become World No.1 Company with our technology and united marketing strategy since 1938. Starting in the year of 1962, we enthusiastically have broadened the global business and declared “Global Company”. Now, we do business in 40 ... Read more