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About Us Kunshan ALF Machinery & Instrument Co. Ltd. was founded in Shanghai in 1998. With a production base of 70,000 square meters located at Huaqiao Town, Kunshan, Jiangsu province, ALF is specialized in the production and export of pressure gauge and door lock. ALF's founding philosophy - Advance - Love - Faith ALF's team spirits: - Loyalty - Commitment - Equity - Unity - Learning - Innovation ALF received the following certificates and patents: - ISO9001:2015 manufacture of pressure gauge and door lock - UL listing: use no oil pressure gauges... [Details] |