manufacturers of cooling in Hong Kong

We were an internet start-up, long before internet start-ups were cool. Actually, in the tools equipment industry, even mentioning the internet was very uncool at that time and many people and br…

SF Filter (Shuangfa) is one of the earliest filter manufacturer in China, established in 1991, product certified by NSF since 2015, WQA membership since 2016, focused on filter cartridges for wat…