SDHH and SDHR acknowledge and agree that PTT is the legitimate proprietor and owner of the PTT Trademarks. SDHH is licensed to use the PTT Trademarks for sale, market, distribution of the Lubricant Product and SDHR is licensed to use the PTT Trademark for manufacturing, production and blending the Lubricant Products in accordance with this Agreement. Notwithstanding, SDHH and SDHR jointly and severally acknowledge and agree that their respective use of the PTT Trademarks shall be in compliance with the format and criteria determined by PTT. Therefore, SDHH and SDHR shall strictly comply with such format and criteria in use of the PTT Trademarks.