After Sales Service Agreement

Tangsong (Shenzhen) Optoelectronic Co.,Ltd ( 3Floor, Bldg A, Zhonghua Industrial Area, You Song Rd, Longhua, Bao'an District, Shenzhen, Guangdong, China) hereby guarantees 

Customers who buy LED products from Tangsong as follows providing the damages are not caused by artificial or natural disaster factors.
We provide three options after sales service methods below.
After Sales Service Method 1.
1). Free after sales period: Normally we guarantee 3 years warranty or 5 years warranty time for technical supports for goods shopping out of Tangsong manufacturer.
2). Customers undertakes the expenses which send the defective products to Tangsong factory, and we undertake the expenses which send the good products to customers.
3). Tangsong offers free training for engineers in our factory. If the total amount of purchase from Tangsong manufacturer is more than 100K USD, Tangsong arrange the 
Technical engineer assisting customers in their countries during free after sales service period for one time, but customer undertakes  all the trip expenses. If the total amount
of purchase from Tangsong manufacturer is more than 1 million USD,  Tangsong undertakes all the trip expenses to arrange the technical engineer assisting for customer in 
Their countries during free sales service period for one time.
After Sales Service Method 2.
1). Tangsong offer 2% complete unit as free spare unit to customers.
2). We provide 3 years free technical supports from goods shipping out of Tangsong manufacturer.
3). Tangsong offer free training for engineers in our factory. If the total amount of purchase from Tangsong manufacturer is more than 1 million USD, Tangsong arrange the technical
engineer assisting customers in their countries during free after sales service period for one time, Tangsong will undertakes all the trip expenses. If the total amount of purchase from
Tangsong manufacturer is more than 5 million USD, Tangsong will undertakes all the trip expenses to arrange the technical engineer assisting customer in their countries during free 
after sales service period for two times.
After Sales Service Method 3.
1). Tangsong offer 1% complete unit as free spare unit to customers.
2). We provide 3 years free technical supports for goods shipping out of Tangsong manufacturer.
3). Tangsong offer free training for engineers in our factory, If the total amount of purchase from Tangsong manufacturer is more than 1 million USD, Tangsong arrange the technical
engineer assisting customers in their countries during free after sales service period for one time, Tangsong will undertakes all the trip expenses. If the total amount of purchase from
Tangsong manufacturer is more than 5 million USD, Tangsong will undertakes all the trip expenses to arrange the technical engineer assisting customer in their countries during free 
after sales service period for three times.
4). Tangsong offer 1% - 5% components for customers as free spare parts shipping together with the goods for customer self-maintaining. The spare parts can be replaced within one year
From goods shopping out of Tangsong factory. Customer undertakes the expenses which send the defective spare parts to Tangsong factory, and we will undertake the expenses which
Send the spare parts to customers.