If possible, please provide only your telephone number to meet the needs of your local post office. If you are absent and cannot pick up items at your location in time, the post office may ask you to remind (in most cases, the postman will only give notice).
PS: We maintain a high degree of security and confidentiality of our customer's personnel information.
We mainly use EMS Express and Parcel Register Post for transportation. You can track EMS Express and your local post office. You can follow the post office at your local post office. Both require your signature to accept.
If you need a track number, please send us an email or leave us a message
We can also use other express transportation such as: UPS, DHL, FedEx, TNT etc. The cost will be higher. If you need the above services, you should contact us first.
Freight insurance is included in the S&H fee.
In general, EMS Express takes about 3 to 6 days depending on the location in the United States. Parcel post mail faster than EMS Express
If you do not use it at ordinary times, please contact us. We will first check its track number. If it does not work, we will send a paper tracking application to the USPS post office, which will take a few days to get a reply.
What is the common sense of laser rangefinder maintenance?
In view of the failure of the laser ranging instrument, please check in accordance with the following procedures.
Because the laser ranging instrument in the delivery process express delivery conditions are not the same, express the process of road conditions will not be the same, in addition to the user's misoperation and other conditions will form different degrees of damage to the instrument, so prompt the majority of users in the instrument at the time please strictly in accordance with the instructions prompt operation.Prevent unnecessary trouble to you.
What are the parameters of laser rangefinder?
We must know the specifications and parameters of any type of product or product.Laser ranging sensors are no exception. The parameters that must be known when choosing laser ranging sensor are: measuring distance, measuring frequency and measuring accuracy.In addition to the use of the environment, measuring objects are also necessary parameters for laser selection.
Conventional lasers can measure 30 meters of naturally problematic surfaces, and reflectors should be set to 30 to 150 meters.However, the long-range laser rangefinder sensor measures distance (km).