Harbin where there is generation processing handmade black ointment

Hello, no matter which generation of processing plant you look for, it is recommended to go to a regular generation of processing plant, first of all, it is best to take a look at the field, to understand the environment of the factory, you can also let the manufacturer to send samples and then through the samples of the effect of the material, price and so on many aspects of the comparison. At the same time will also visit the ointment processing factory, the manufacturer's production equipment, production capacity, production experience to do an assessment, and finally may also understand the authenticity of the manufacturer and the validity of the qualifications of the registration query.