Nowadays, Aluminum machining parts is popular in the industry. Aluminum is soft and light, many carbon steel machining parts are replaced with aluminum machining parts. Material aluminum is easy to be machined, machining aluminum also can protect CNC machines and reduce the loss of blades. Material aluminum is easy to be formed, you can get different complex shapes through gravity casting, die casting, cold forging, and hot forging. Meanwhile, anodizing is a bit better than zinc plating for rust resistance.
So exhibitions are the most important way to find a good Chinese precision aluminum machining parts manufacturer. There are many exhibitions all of the world, for example, Hannover Messe is the biggest in the world, Midest is the most specialist sub-contract in the world, Birmingham industrial is the biggest in UK, IMTS is the biggest in the north American, etc. You can find SYLUE’s booths in these exhibitions at: https://www.syluecncmachining.com/cnc-machining-service-exhibtion
Due to Covid-19 breaks out all of the world, exhibitions are forbidden to be organized again. Buyers are sourcing the aluminum CNC machining parts on Internet gradually. From 2019 to 2021, e-commerce platforms become more and more popular. Amazon becomes the biggest in the world, Shopee is the biggest in Southeast Asian, Alibaba is the biggest in China, etc. The buyers already like the platforms and learn to know how to process the order. SYLUE has website on Alibaba too, you can see it at: http://www.sylue.com.cn
The third party audit is common used. It is specialist and authority. Many transnational corporations expand their business to China, such as SGS, BV, TUV, ITS, AI, API, VDE, CSA, UL, etc.
They will provide you a specialist and objective audit report, which has score. You can decide how to process with the order according to the audit report. Obviously, the cost is expensive. It is about USD300 per day for audit supplier excluding transportation fee. And they usually charge 2 days at least for each audit.
You can see more details for audit supplier at: https://www.syluecncmachining.com/china-top-1-precision-cnc-machining-manufacturers
When you finish the Customs clearance, you will pay the port cost and import tariff. You can search the US tariff at: https://hts.usitc.gov/
When you find bad parts during inspection, you should make a inspection report, take photos, and make a claim statement to the CNC machining factories. Good CNC machining factories have warranty for their products, such as SYLUE has 1 year warranty. It’s easy to do claim compensation, it’s also easy for them to find which process is wrong. But bad CNC machining factories don’t have warranty, it’s hard for you to do claim compensation. When you work with bad CNC machining factories, Alibaba trade assurance can help you to protect your orders. You can see more details at: https://tradeassurance.alibaba.com/?spm=a2700.82936188.8.131.520267afZDNlkO&tracelog=footer_ta