Zhe Jiang Happy Tree SHOCK ABSORBER Co.,Ltd specialized in producing shock absorber for 33 years experience with more than 4500pcs different models.KALASO is our brand have a good reputation on the abroad and domestic.cover with more than 90% car model,the products are welcome by more than 60 country and region as Europe,America,middle east, Southeast Asia,africa etc.Happy Tree Shock Absorber integrated manufacture,reasearch,design for OEM and Aftermarket The quality system is approved by ISO/TS16949 .The aim of Happy-Tree is carry out value of brand,so we do everything perfect to meet customer's need.