Founded in 1987, Qingdao Hakin Group Co., Ltd is one of biggest manufacturers of pressure gauge inChina, and a specialized developer and producer in the field of gas regulator, cutting torch, weldingtorch and pressure thermometer. Hakin offers a wide variety of stock and customized products. Quality has always played a major role in Hakin. We are producing products with modern machinery, assembling and testing equipment. We are certified according to ISO9001, ISO14001, ISO45001, ISO13485, KS, SGS and CE. We supply about three million yuan of pressure gauges to PetroChina each year. For supply better service, we organized export department of factory which named QINGDAO AUTOMETERS CO.,LTD in 2007. We not only have more than 30 years of production experience, but also have years of export experience. We are OEM of many South Korean brands and some brands of other countries. We supply our products to large enterprises. Our business partners include 東, Hatlapa, ЮМАС, Konics, HYUNDAI, SJ, Withus, YuWelco, Cretos, Sam Won, NsWel, Keyang, ThermalWeld, NetWeld, Koreana, Kalpumps, Kegerator, Tangia, SANY, Haier, Hisense, CNPC, SINOPEC, ANSTEEL, etc. Cell phone & wechat & LINE & whats APP ID: 86-18724779182 Email: may( a )hakin.com In 2020, we took over a well-known casting company. Now, many pressure gauge manufacturers in China purchase large amounts of connection tubes from us. We can make brass/stainless steel connection tube (socket), thread adapter, check valve and so on. The material includes HPb58-3, HPb59-1, RoHs Lead-free brass, STS304, STS316, STS316L.... If you're interested in our products, pls kindly contact us. Thank you!